diff --git a/python2.7-alpine3.7/entrypoint.sh b/python2.7-alpine3.7/entrypoint.sh
index 8071431..4998f88 100644
--- a/python2.7-alpine3.7/entrypoint.sh
+++ b/python2.7-alpine3.7/entrypoint.sh
@@ -18,44 +18,48 @@ NGINX_WORKER_CONNECTIONS=${NGINX_WORKER_CONNECTIONS:-1024}
 # Get the listen port for Nginx, default to 80
 USE_LISTEN_PORT=${LISTEN_PORT:-80}
 
-content='user  nginx;\n'
-# Set the number of worker processes in Nginx
-content=$content"worker_processes ${USE_NGINX_WORKER_PROCESSES};\n"
-content=$content'error_log  /var/log/nginx/error.log warn;\n'
-content=$content'pid        /var/run/nginx.pid;\n'
-content=$content'events {\n'
-content=$content"    worker_connections ${NGINX_WORKER_CONNECTIONS};\n"
-content=$content'}\n'
-content=$content'http {\n'
-content=$content'    include       /etc/nginx/mime.types;\n'
-content=$content'    default_type  application/octet-stream;\n'
-content=$content'    log_format  main  '"'\$remote_addr - \$remote_user [\$time_local] \"\$request\" '\n"
-content=$content'                      '"'\$status \$body_bytes_sent \"\$http_referer\" '\n"
-content=$content'                      '"'\"\$http_user_agent\" \"\$http_x_forwarded_for\"';\n"
-content=$content'    access_log  /var/log/nginx/access.log  main;\n'
-content=$content'    sendfile        on;\n'
-content=$content'    keepalive_timeout  65;\n'
-content=$content'    include /etc/nginx/conf.d/*.conf;\n'
-content=$content'}\n'
-content=$content'daemon off;\n'
-# Set the max number of open file descriptors for Nginx workers, if requested
-if [ -n "${NGINX_WORKER_OPEN_FILES}" ] ; then
-    content=$content"worker_rlimit_nofile ${NGINX_WORKER_OPEN_FILES};\n"
+if [ -f /app/nginx.conf ]; then
+    cp /app/nginx.conf /etc/nginx/nginx.conf
+else
+    content='user  nginx;\n'
+    # Set the number of worker processes in Nginx
+    content=$content"worker_processes ${USE_NGINX_WORKER_PROCESSES};\n"
+    content=$content'error_log  /var/log/nginx/error.log warn;\n'
+    content=$content'pid        /var/run/nginx.pid;\n'
+    content=$content'events {\n'
+    content=$content"    worker_connections ${NGINX_WORKER_CONNECTIONS};\n"
+    content=$content'}\n'
+    content=$content'http {\n'
+    content=$content'    include       /etc/nginx/mime.types;\n'
+    content=$content'    default_type  application/octet-stream;\n'
+    content=$content'    log_format  main  '"'\$remote_addr - \$remote_user [\$time_local] \"\$request\" '\n"
+    content=$content'                      '"'\$status \$body_bytes_sent \"\$http_referer\" '\n"
+    content=$content'                      '"'\"\$http_user_agent\" \"\$http_x_forwarded_for\"';\n"
+    content=$content'    access_log  /var/log/nginx/access.log  main;\n'
+    content=$content'    sendfile        on;\n'
+    content=$content'    keepalive_timeout  65;\n'
+    content=$content'    include /etc/nginx/conf.d/*.conf;\n'
+    content=$content'}\n'
+    content=$content'daemon off;\n'
+    # Set the max number of open file descriptors for Nginx workers, if requested
+    if [ -n "${NGINX_WORKER_OPEN_FILES}" ] ; then
+        content=$content"worker_rlimit_nofile ${NGINX_WORKER_OPEN_FILES};\n"
+    fi
+    # Save generated /etc/nginx/nginx.conf
+    printf "$content" > /etc/nginx/nginx.conf
+
+    content_server='server {\n'
+    content_server=$content_server"    listen ${USE_LISTEN_PORT};\n"
+    content_server=$content_server'    location / {\n'
+    content_server=$content_server'        include uwsgi_params;\n'
+    content_server=$content_server'        uwsgi_pass unix:///tmp/uwsgi.sock;\n'
+    content_server=$content_server'    }\n'
+    content_server=$content_server'}\n'
+    # Save generated server /etc/nginx/conf.d/nginx.conf
+    printf "$content_server" > /etc/nginx/conf.d/nginx.conf
+
+    # Generate Nginx config for maximum upload file size
+    printf "client_max_body_size $USE_NGINX_MAX_UPLOAD;\n" > /etc/nginx/conf.d/upload.conf
 fi
-# Save generated /etc/nginx/nginx.conf
-printf "$content" > /etc/nginx/nginx.conf
-
-content_server='server {\n'
-content_server=$content_server"    listen ${USE_LISTEN_PORT};\n"
-content_server=$content_server'    location / {\n'
-content_server=$content_server'        include uwsgi_params;\n'
-content_server=$content_server'        uwsgi_pass unix:///tmp/uwsgi.sock;\n'
-content_server=$content_server'    }\n'
-content_server=$content_server'}\n'
-# Save generated server /etc/nginx/conf.d/nginx.conf
-printf "$content_server" > /etc/nginx/conf.d/nginx.conf
-
-# Generate Nginx config for maximum upload file size
-printf "client_max_body_size $USE_NGINX_MAX_UPLOAD;\n" > /etc/nginx/conf.d/upload.conf
 
 exec "$@"
diff --git a/python2.7-alpine3.8/entrypoint.sh b/python2.7-alpine3.8/entrypoint.sh
index 8071431..4998f88 100644
--- a/python2.7-alpine3.8/entrypoint.sh
+++ b/python2.7-alpine3.8/entrypoint.sh
@@ -18,44 +18,48 @@ NGINX_WORKER_CONNECTIONS=${NGINX_WORKER_CONNECTIONS:-1024}
 # Get the listen port for Nginx, default to 80
 USE_LISTEN_PORT=${LISTEN_PORT:-80}
 
-content='user  nginx;\n'
-# Set the number of worker processes in Nginx
-content=$content"worker_processes ${USE_NGINX_WORKER_PROCESSES};\n"
-content=$content'error_log  /var/log/nginx/error.log warn;\n'
-content=$content'pid        /var/run/nginx.pid;\n'
-content=$content'events {\n'
-content=$content"    worker_connections ${NGINX_WORKER_CONNECTIONS};\n"
-content=$content'}\n'
-content=$content'http {\n'
-content=$content'    include       /etc/nginx/mime.types;\n'
-content=$content'    default_type  application/octet-stream;\n'
-content=$content'    log_format  main  '"'\$remote_addr - \$remote_user [\$time_local] \"\$request\" '\n"
-content=$content'                      '"'\$status \$body_bytes_sent \"\$http_referer\" '\n"
-content=$content'                      '"'\"\$http_user_agent\" \"\$http_x_forwarded_for\"';\n"
-content=$content'    access_log  /var/log/nginx/access.log  main;\n'
-content=$content'    sendfile        on;\n'
-content=$content'    keepalive_timeout  65;\n'
-content=$content'    include /etc/nginx/conf.d/*.conf;\n'
-content=$content'}\n'
-content=$content'daemon off;\n'
-# Set the max number of open file descriptors for Nginx workers, if requested
-if [ -n "${NGINX_WORKER_OPEN_FILES}" ] ; then
-    content=$content"worker_rlimit_nofile ${NGINX_WORKER_OPEN_FILES};\n"
+if [ -f /app/nginx.conf ]; then
+    cp /app/nginx.conf /etc/nginx/nginx.conf
+else
+    content='user  nginx;\n'
+    # Set the number of worker processes in Nginx
+    content=$content"worker_processes ${USE_NGINX_WORKER_PROCESSES};\n"
+    content=$content'error_log  /var/log/nginx/error.log warn;\n'
+    content=$content'pid        /var/run/nginx.pid;\n'
+    content=$content'events {\n'
+    content=$content"    worker_connections ${NGINX_WORKER_CONNECTIONS};\n"
+    content=$content'}\n'
+    content=$content'http {\n'
+    content=$content'    include       /etc/nginx/mime.types;\n'
+    content=$content'    default_type  application/octet-stream;\n'
+    content=$content'    log_format  main  '"'\$remote_addr - \$remote_user [\$time_local] \"\$request\" '\n"
+    content=$content'                      '"'\$status \$body_bytes_sent \"\$http_referer\" '\n"
+    content=$content'                      '"'\"\$http_user_agent\" \"\$http_x_forwarded_for\"';\n"
+    content=$content'    access_log  /var/log/nginx/access.log  main;\n'
+    content=$content'    sendfile        on;\n'
+    content=$content'    keepalive_timeout  65;\n'
+    content=$content'    include /etc/nginx/conf.d/*.conf;\n'
+    content=$content'}\n'
+    content=$content'daemon off;\n'
+    # Set the max number of open file descriptors for Nginx workers, if requested
+    if [ -n "${NGINX_WORKER_OPEN_FILES}" ] ; then
+        content=$content"worker_rlimit_nofile ${NGINX_WORKER_OPEN_FILES};\n"
+    fi
+    # Save generated /etc/nginx/nginx.conf
+    printf "$content" > /etc/nginx/nginx.conf
+
+    content_server='server {\n'
+    content_server=$content_server"    listen ${USE_LISTEN_PORT};\n"
+    content_server=$content_server'    location / {\n'
+    content_server=$content_server'        include uwsgi_params;\n'
+    content_server=$content_server'        uwsgi_pass unix:///tmp/uwsgi.sock;\n'
+    content_server=$content_server'    }\n'
+    content_server=$content_server'}\n'
+    # Save generated server /etc/nginx/conf.d/nginx.conf
+    printf "$content_server" > /etc/nginx/conf.d/nginx.conf
+
+    # Generate Nginx config for maximum upload file size
+    printf "client_max_body_size $USE_NGINX_MAX_UPLOAD;\n" > /etc/nginx/conf.d/upload.conf
 fi
-# Save generated /etc/nginx/nginx.conf
-printf "$content" > /etc/nginx/nginx.conf
-
-content_server='server {\n'
-content_server=$content_server"    listen ${USE_LISTEN_PORT};\n"
-content_server=$content_server'    location / {\n'
-content_server=$content_server'        include uwsgi_params;\n'
-content_server=$content_server'        uwsgi_pass unix:///tmp/uwsgi.sock;\n'
-content_server=$content_server'    }\n'
-content_server=$content_server'}\n'
-# Save generated server /etc/nginx/conf.d/nginx.conf
-printf "$content_server" > /etc/nginx/conf.d/nginx.conf
-
-# Generate Nginx config for maximum upload file size
-printf "client_max_body_size $USE_NGINX_MAX_UPLOAD;\n" > /etc/nginx/conf.d/upload.conf
 
 exec "$@"
diff --git a/python2.7/entrypoint.sh b/python2.7/entrypoint.sh
index 5306a8a..343dda1 100644
--- a/python2.7/entrypoint.sh
+++ b/python2.7/entrypoint.sh
@@ -14,44 +14,48 @@ NGINX_WORKER_CONNECTIONS=${NGINX_WORKER_CONNECTIONS:-1024}
 # Get the listen port for Nginx, default to 80
 USE_LISTEN_PORT=${LISTEN_PORT:-80}
 
-content='user  nginx;\n'
-# Set the number of worker processes in Nginx
-content=$content"worker_processes ${USE_NGINX_WORKER_PROCESSES};\n"
-content=$content'error_log  /var/log/nginx/error.log warn;\n'
-content=$content'pid        /var/run/nginx.pid;\n'
-content=$content'events {\n'
-content=$content"    worker_connections ${NGINX_WORKER_CONNECTIONS};\n"
-content=$content'}\n'
-content=$content'http {\n'
-content=$content'    include       /etc/nginx/mime.types;\n'
-content=$content'    default_type  application/octet-stream;\n'
-content=$content'    log_format  main  '"'\$remote_addr - \$remote_user [\$time_local] \"\$request\" '\n"
-content=$content'                      '"'\$status \$body_bytes_sent \"\$http_referer\" '\n"
-content=$content'                      '"'\"\$http_user_agent\" \"\$http_x_forwarded_for\"';\n"
-content=$content'    access_log  /var/log/nginx/access.log  main;\n'
-content=$content'    sendfile        on;\n'
-content=$content'    keepalive_timeout  65;\n'
-content=$content'    include /etc/nginx/conf.d/*.conf;\n'
-content=$content'}\n'
-content=$content'daemon off;\n'
-# Set the max number of open file descriptors for Nginx workers, if requested
-if [ -n "${NGINX_WORKER_OPEN_FILES}" ] ; then
-    content=$content"worker_rlimit_nofile ${NGINX_WORKER_OPEN_FILES};\n"
+if [ -f /app/nginx.conf ]; then
+    cp /app/nginx.conf /etc/nginx/nginx.conf
+else
+    content='user  nginx;\n'
+    # Set the number of worker processes in Nginx
+    content=$content"worker_processes ${USE_NGINX_WORKER_PROCESSES};\n"
+    content=$content'error_log  /var/log/nginx/error.log warn;\n'
+    content=$content'pid        /var/run/nginx.pid;\n'
+    content=$content'events {\n'
+    content=$content"    worker_connections ${NGINX_WORKER_CONNECTIONS};\n"
+    content=$content'}\n'
+    content=$content'http {\n'
+    content=$content'    include       /etc/nginx/mime.types;\n'
+    content=$content'    default_type  application/octet-stream;\n'
+    content=$content'    log_format  main  '"'\$remote_addr - \$remote_user [\$time_local] \"\$request\" '\n"
+    content=$content'                      '"'\$status \$body_bytes_sent \"\$http_referer\" '\n"
+    content=$content'                      '"'\"\$http_user_agent\" \"\$http_x_forwarded_for\"';\n"
+    content=$content'    access_log  /var/log/nginx/access.log  main;\n'
+    content=$content'    sendfile        on;\n'
+    content=$content'    keepalive_timeout  65;\n'
+    content=$content'    include /etc/nginx/conf.d/*.conf;\n'
+    content=$content'}\n'
+    content=$content'daemon off;\n'
+    # Set the max number of open file descriptors for Nginx workers, if requested
+    if [ -n "${NGINX_WORKER_OPEN_FILES}" ] ; then
+        content=$content"worker_rlimit_nofile ${NGINX_WORKER_OPEN_FILES};\n"
+    fi
+    # Save generated /etc/nginx/nginx.conf
+    printf "$content" > /etc/nginx/nginx.conf
+
+    content_server='server {\n'
+    content_server=$content_server"    listen ${USE_LISTEN_PORT};\n"
+    content_server=$content_server'    location / {\n'
+    content_server=$content_server'        include uwsgi_params;\n'
+    content_server=$content_server'        uwsgi_pass unix:///tmp/uwsgi.sock;\n'
+    content_server=$content_server'    }\n'
+    content_server=$content_server'}\n'
+    # Save generated server /etc/nginx/conf.d/nginx.conf
+    printf "$content_server" > /etc/nginx/conf.d/nginx.conf
+
+    # Generate Nginx config for maximum upload file size
+    printf "client_max_body_size $USE_NGINX_MAX_UPLOAD;\n" > /etc/nginx/conf.d/upload.conf
 fi
-# Save generated /etc/nginx/nginx.conf
-printf "$content" > /etc/nginx/nginx.conf
-
-content_server='server {\n'
-content_server=$content_server"    listen ${USE_LISTEN_PORT};\n"
-content_server=$content_server'    location / {\n'
-content_server=$content_server'        include uwsgi_params;\n'
-content_server=$content_server'        uwsgi_pass unix:///tmp/uwsgi.sock;\n'
-content_server=$content_server'    }\n'
-content_server=$content_server'}\n'
-# Save generated server /etc/nginx/conf.d/nginx.conf
-printf "$content_server" > /etc/nginx/conf.d/nginx.conf
-
-# Generate Nginx config for maximum upload file size
-printf "client_max_body_size $USE_NGINX_MAX_UPLOAD;\n" > /etc/nginx/conf.d/upload.conf
 
 exec "$@"
diff --git a/python3.5/entrypoint.sh b/python3.5/entrypoint.sh
index 5306a8a..343dda1 100644
--- a/python3.5/entrypoint.sh
+++ b/python3.5/entrypoint.sh
@@ -14,44 +14,48 @@ NGINX_WORKER_CONNECTIONS=${NGINX_WORKER_CONNECTIONS:-1024}
 # Get the listen port for Nginx, default to 80
 USE_LISTEN_PORT=${LISTEN_PORT:-80}
 
-content='user  nginx;\n'
-# Set the number of worker processes in Nginx
-content=$content"worker_processes ${USE_NGINX_WORKER_PROCESSES};\n"
-content=$content'error_log  /var/log/nginx/error.log warn;\n'
-content=$content'pid        /var/run/nginx.pid;\n'
-content=$content'events {\n'
-content=$content"    worker_connections ${NGINX_WORKER_CONNECTIONS};\n"
-content=$content'}\n'
-content=$content'http {\n'
-content=$content'    include       /etc/nginx/mime.types;\n'
-content=$content'    default_type  application/octet-stream;\n'
-content=$content'    log_format  main  '"'\$remote_addr - \$remote_user [\$time_local] \"\$request\" '\n"
-content=$content'                      '"'\$status \$body_bytes_sent \"\$http_referer\" '\n"
-content=$content'                      '"'\"\$http_user_agent\" \"\$http_x_forwarded_for\"';\n"
-content=$content'    access_log  /var/log/nginx/access.log  main;\n'
-content=$content'    sendfile        on;\n'
-content=$content'    keepalive_timeout  65;\n'
-content=$content'    include /etc/nginx/conf.d/*.conf;\n'
-content=$content'}\n'
-content=$content'daemon off;\n'
-# Set the max number of open file descriptors for Nginx workers, if requested
-if [ -n "${NGINX_WORKER_OPEN_FILES}" ] ; then
-    content=$content"worker_rlimit_nofile ${NGINX_WORKER_OPEN_FILES};\n"
+if [ -f /app/nginx.conf ]; then
+    cp /app/nginx.conf /etc/nginx/nginx.conf
+else
+    content='user  nginx;\n'
+    # Set the number of worker processes in Nginx
+    content=$content"worker_processes ${USE_NGINX_WORKER_PROCESSES};\n"
+    content=$content'error_log  /var/log/nginx/error.log warn;\n'
+    content=$content'pid        /var/run/nginx.pid;\n'
+    content=$content'events {\n'
+    content=$content"    worker_connections ${NGINX_WORKER_CONNECTIONS};\n"
+    content=$content'}\n'
+    content=$content'http {\n'
+    content=$content'    include       /etc/nginx/mime.types;\n'
+    content=$content'    default_type  application/octet-stream;\n'
+    content=$content'    log_format  main  '"'\$remote_addr - \$remote_user [\$time_local] \"\$request\" '\n"
+    content=$content'                      '"'\$status \$body_bytes_sent \"\$http_referer\" '\n"
+    content=$content'                      '"'\"\$http_user_agent\" \"\$http_x_forwarded_for\"';\n"
+    content=$content'    access_log  /var/log/nginx/access.log  main;\n'
+    content=$content'    sendfile        on;\n'
+    content=$content'    keepalive_timeout  65;\n'
+    content=$content'    include /etc/nginx/conf.d/*.conf;\n'
+    content=$content'}\n'
+    content=$content'daemon off;\n'
+    # Set the max number of open file descriptors for Nginx workers, if requested
+    if [ -n "${NGINX_WORKER_OPEN_FILES}" ] ; then
+        content=$content"worker_rlimit_nofile ${NGINX_WORKER_OPEN_FILES};\n"
+    fi
+    # Save generated /etc/nginx/nginx.conf
+    printf "$content" > /etc/nginx/nginx.conf
+
+    content_server='server {\n'
+    content_server=$content_server"    listen ${USE_LISTEN_PORT};\n"
+    content_server=$content_server'    location / {\n'
+    content_server=$content_server'        include uwsgi_params;\n'
+    content_server=$content_server'        uwsgi_pass unix:///tmp/uwsgi.sock;\n'
+    content_server=$content_server'    }\n'
+    content_server=$content_server'}\n'
+    # Save generated server /etc/nginx/conf.d/nginx.conf
+    printf "$content_server" > /etc/nginx/conf.d/nginx.conf
+
+    # Generate Nginx config for maximum upload file size
+    printf "client_max_body_size $USE_NGINX_MAX_UPLOAD;\n" > /etc/nginx/conf.d/upload.conf
 fi
-# Save generated /etc/nginx/nginx.conf
-printf "$content" > /etc/nginx/nginx.conf
-
-content_server='server {\n'
-content_server=$content_server"    listen ${USE_LISTEN_PORT};\n"
-content_server=$content_server'    location / {\n'
-content_server=$content_server'        include uwsgi_params;\n'
-content_server=$content_server'        uwsgi_pass unix:///tmp/uwsgi.sock;\n'
-content_server=$content_server'    }\n'
-content_server=$content_server'}\n'
-# Save generated server /etc/nginx/conf.d/nginx.conf
-printf "$content_server" > /etc/nginx/conf.d/nginx.conf
-
-# Generate Nginx config for maximum upload file size
-printf "client_max_body_size $USE_NGINX_MAX_UPLOAD;\n" > /etc/nginx/conf.d/upload.conf
 
 exec "$@"
diff --git a/python3.6-alpine3.7/entrypoint.sh b/python3.6-alpine3.7/entrypoint.sh
index 0edd595..7c7d99f 100644
--- a/python3.6-alpine3.7/entrypoint.sh
+++ b/python3.6-alpine3.7/entrypoint.sh
@@ -18,44 +18,48 @@ NGINX_WORKER_CONNECTIONS=${NGINX_WORKER_CONNECTIONS:-1024}
 # Get the listen port for Nginx, default to 80
 USE_LISTEN_PORT=${LISTEN_PORT:-80}
 
-content='user  nginx;\n'
-# Set the number of worker processes in Nginx
-content=$content"worker_processes ${USE_NGINX_WORKER_PROCESSES};\n"
-content=$content'error_log  /var/log/nginx/error.log warn;\n'
-content=$content'pid        /var/run/nginx.pid;\n'
-content=$content'events {\n'
-content=$content"    worker_connections ${NGINX_WORKER_CONNECTIONS};\n"
-content=$content'}\n'
-content=$content'http {\n'
-content=$content'    include       /etc/nginx/mime.types;\n'
-content=$content'    default_type  application/octet-stream;\n'
-content=$content'    log_format  main  '"'\$remote_addr - \$remote_user [\$time_local] \"\$request\" '\n"
-content=$content'                      '"'\$status \$body_bytes_sent \"\$http_referer\" '\n"
-content=$content'                      '"'\"\$http_user_agent\" \"\$http_x_forwarded_for\"';\n"
-content=$content'    access_log  /var/log/nginx/access.log  main;\n'
-content=$content'    sendfile        on;\n'
-content=$content'    keepalive_timeout  65;\n'
-content=$content'    include /etc/nginx/conf.d/*.conf;\n'
-content=$content'}\n'
-content=$content'daemon off;\n'
-# Set the max number of open file descriptors for Nginx workers, if requested
-if [ -n "${NGINX_WORKER_OPEN_FILES}" ] ; then
-    content=$content"worker_rlimit_nofile ${NGINX_WORKER_OPEN_FILES};\n"
+if [ -f /app/nginx.conf ]; then
+    cp /app/nginx.conf /etc/nginx/nginx.conf
+else
+    content='user  nginx;\n'
+    # Set the number of worker processes in Nginx
+    content=$content"worker_processes ${USE_NGINX_WORKER_PROCESSES};\n"
+    content=$content'error_log  /var/log/nginx/error.log warn;\n'
+    content=$content'pid        /var/run/nginx.pid;\n'
+    content=$content'events {\n'
+    content=$content"    worker_connections ${NGINX_WORKER_CONNECTIONS};\n"
+    content=$content'}\n'
+    content=$content'http {\n'
+    content=$content'    include       /etc/nginx/mime.types;\n'
+    content=$content'    default_type  application/octet-stream;\n'
+    content=$content'    log_format  main  '"'\$remote_addr - \$remote_user [\$time_local] \"\$request\" '\n"
+    content=$content'                      '"'\$status \$body_bytes_sent \"\$http_referer\" '\n"
+    content=$content'                      '"'\"\$http_user_agent\" \"\$http_x_forwarded_for\"';\n"
+    content=$content'    access_log  /var/log/nginx/access.log  main;\n'
+    content=$content'    sendfile        on;\n'
+    content=$content'    keepalive_timeout  65;\n'
+    content=$content'    include /etc/nginx/conf.d/*.conf;\n'
+    content=$content'}\n'
+    content=$content'daemon off;\n'
+    # Set the max number of open file descriptors for Nginx workers, if requested
+    if [ -n "${NGINX_WORKER_OPEN_FILES}" ] ; then
+        content=$content"worker_rlimit_nofile ${NGINX_WORKER_OPEN_FILES};\n"
+    fi
+    # Save generated /etc/nginx/nginx.conf
+    printf "$content" > /etc/nginx/nginx.conf
+
+    content_server='server {\n'
+    content_server=$content_server"    listen ${USE_LISTEN_PORT};\n"
+    content_server=$content_server'    location / {\n'
+    content_server=$content_server'        include uwsgi_params;\n'
+    content_server=$content_server'        uwsgi_pass unix:///tmp/uwsgi.sock;\n'
+    content_server=$content_server'    }\n'
+    content_server=$content_server'}\n'
+    # Save generated server /etc/nginx/conf.d/nginx.conf
+    printf "$content_server" > /etc/nginx/conf.d/nginx.conf
+
+    # Generate Nginx config for maximum upload file size
+    printf "client_max_body_size $USE_NGINX_MAX_UPLOAD;\n" > /etc/nginx/conf.d/upload.conf
 fi
-# Save generated /etc/nginx/nginx.conf
-printf "$content" > /etc/nginx/nginx.conf
-
-content_server='server {\n'
-content_server=$content_server"    listen ${USE_LISTEN_PORT};\n"
-content_server=$content_server'    location / {\n'
-content_server=$content_server'        include uwsgi_params;\n'
-content_server=$content_server'        uwsgi_pass unix:///tmp/uwsgi.sock;\n'
-content_server=$content_server'    }\n'
-content_server=$content_server'}\n'
-# Save generated server /etc/nginx/conf.d/nginx.conf
-printf "$content_server" > /etc/nginx/conf.d/nginx.conf
-
-# Generate Nginx config for maximum upload file size
-printf "client_max_body_size $USE_NGINX_MAX_UPLOAD;\n" > /etc/nginx/conf.d/upload.conf
 
 exec "$@"
diff --git a/python3.6-alpine3.8/entrypoint.sh b/python3.6-alpine3.8/entrypoint.sh
index 0edd595..7c7d99f 100644
--- a/python3.6-alpine3.8/entrypoint.sh
+++ b/python3.6-alpine3.8/entrypoint.sh
@@ -18,44 +18,48 @@ NGINX_WORKER_CONNECTIONS=${NGINX_WORKER_CONNECTIONS:-1024}
 # Get the listen port for Nginx, default to 80
 USE_LISTEN_PORT=${LISTEN_PORT:-80}
 
-content='user  nginx;\n'
-# Set the number of worker processes in Nginx
-content=$content"worker_processes ${USE_NGINX_WORKER_PROCESSES};\n"
-content=$content'error_log  /var/log/nginx/error.log warn;\n'
-content=$content'pid        /var/run/nginx.pid;\n'
-content=$content'events {\n'
-content=$content"    worker_connections ${NGINX_WORKER_CONNECTIONS};\n"
-content=$content'}\n'
-content=$content'http {\n'
-content=$content'    include       /etc/nginx/mime.types;\n'
-content=$content'    default_type  application/octet-stream;\n'
-content=$content'    log_format  main  '"'\$remote_addr - \$remote_user [\$time_local] \"\$request\" '\n"
-content=$content'                      '"'\$status \$body_bytes_sent \"\$http_referer\" '\n"
-content=$content'                      '"'\"\$http_user_agent\" \"\$http_x_forwarded_for\"';\n"
-content=$content'    access_log  /var/log/nginx/access.log  main;\n'
-content=$content'    sendfile        on;\n'
-content=$content'    keepalive_timeout  65;\n'
-content=$content'    include /etc/nginx/conf.d/*.conf;\n'
-content=$content'}\n'
-content=$content'daemon off;\n'
-# Set the max number of open file descriptors for Nginx workers, if requested
-if [ -n "${NGINX_WORKER_OPEN_FILES}" ] ; then
-    content=$content"worker_rlimit_nofile ${NGINX_WORKER_OPEN_FILES};\n"
+if [ -f /app/nginx.conf ]; then
+    cp /app/nginx.conf /etc/nginx/nginx.conf
+else
+    content='user  nginx;\n'
+    # Set the number of worker processes in Nginx
+    content=$content"worker_processes ${USE_NGINX_WORKER_PROCESSES};\n"
+    content=$content'error_log  /var/log/nginx/error.log warn;\n'
+    content=$content'pid        /var/run/nginx.pid;\n'
+    content=$content'events {\n'
+    content=$content"    worker_connections ${NGINX_WORKER_CONNECTIONS};\n"
+    content=$content'}\n'
+    content=$content'http {\n'
+    content=$content'    include       /etc/nginx/mime.types;\n'
+    content=$content'    default_type  application/octet-stream;\n'
+    content=$content'    log_format  main  '"'\$remote_addr - \$remote_user [\$time_local] \"\$request\" '\n"
+    content=$content'                      '"'\$status \$body_bytes_sent \"\$http_referer\" '\n"
+    content=$content'                      '"'\"\$http_user_agent\" \"\$http_x_forwarded_for\"';\n"
+    content=$content'    access_log  /var/log/nginx/access.log  main;\n'
+    content=$content'    sendfile        on;\n'
+    content=$content'    keepalive_timeout  65;\n'
+    content=$content'    include /etc/nginx/conf.d/*.conf;\n'
+    content=$content'}\n'
+    content=$content'daemon off;\n'
+    # Set the max number of open file descriptors for Nginx workers, if requested
+    if [ -n "${NGINX_WORKER_OPEN_FILES}" ] ; then
+        content=$content"worker_rlimit_nofile ${NGINX_WORKER_OPEN_FILES};\n"
+    fi
+    # Save generated /etc/nginx/nginx.conf
+    printf "$content" > /etc/nginx/nginx.conf
+
+    content_server='server {\n'
+    content_server=$content_server"    listen ${USE_LISTEN_PORT};\n"
+    content_server=$content_server'    location / {\n'
+    content_server=$content_server'        include uwsgi_params;\n'
+    content_server=$content_server'        uwsgi_pass unix:///tmp/uwsgi.sock;\n'
+    content_server=$content_server'    }\n'
+    content_server=$content_server'}\n'
+    # Save generated server /etc/nginx/conf.d/nginx.conf
+    printf "$content_server" > /etc/nginx/conf.d/nginx.conf
+
+    # Generate Nginx config for maximum upload file size
+    printf "client_max_body_size $USE_NGINX_MAX_UPLOAD;\n" > /etc/nginx/conf.d/upload.conf
 fi
-# Save generated /etc/nginx/nginx.conf
-printf "$content" > /etc/nginx/nginx.conf
-
-content_server='server {\n'
-content_server=$content_server"    listen ${USE_LISTEN_PORT};\n"
-content_server=$content_server'    location / {\n'
-content_server=$content_server'        include uwsgi_params;\n'
-content_server=$content_server'        uwsgi_pass unix:///tmp/uwsgi.sock;\n'
-content_server=$content_server'    }\n'
-content_server=$content_server'}\n'
-# Save generated server /etc/nginx/conf.d/nginx.conf
-printf "$content_server" > /etc/nginx/conf.d/nginx.conf
-
-# Generate Nginx config for maximum upload file size
-printf "client_max_body_size $USE_NGINX_MAX_UPLOAD;\n" > /etc/nginx/conf.d/upload.conf
 
 exec "$@"
diff --git a/python3.6/entrypoint.sh b/python3.6/entrypoint.sh
index 5306a8a..343dda1 100644
--- a/python3.6/entrypoint.sh
+++ b/python3.6/entrypoint.sh
@@ -14,44 +14,48 @@ NGINX_WORKER_CONNECTIONS=${NGINX_WORKER_CONNECTIONS:-1024}
 # Get the listen port for Nginx, default to 80
 USE_LISTEN_PORT=${LISTEN_PORT:-80}
 
-content='user  nginx;\n'
-# Set the number of worker processes in Nginx
-content=$content"worker_processes ${USE_NGINX_WORKER_PROCESSES};\n"
-content=$content'error_log  /var/log/nginx/error.log warn;\n'
-content=$content'pid        /var/run/nginx.pid;\n'
-content=$content'events {\n'
-content=$content"    worker_connections ${NGINX_WORKER_CONNECTIONS};\n"
-content=$content'}\n'
-content=$content'http {\n'
-content=$content'    include       /etc/nginx/mime.types;\n'
-content=$content'    default_type  application/octet-stream;\n'
-content=$content'    log_format  main  '"'\$remote_addr - \$remote_user [\$time_local] \"\$request\" '\n"
-content=$content'                      '"'\$status \$body_bytes_sent \"\$http_referer\" '\n"
-content=$content'                      '"'\"\$http_user_agent\" \"\$http_x_forwarded_for\"';\n"
-content=$content'    access_log  /var/log/nginx/access.log  main;\n'
-content=$content'    sendfile        on;\n'
-content=$content'    keepalive_timeout  65;\n'
-content=$content'    include /etc/nginx/conf.d/*.conf;\n'
-content=$content'}\n'
-content=$content'daemon off;\n'
-# Set the max number of open file descriptors for Nginx workers, if requested
-if [ -n "${NGINX_WORKER_OPEN_FILES}" ] ; then
-    content=$content"worker_rlimit_nofile ${NGINX_WORKER_OPEN_FILES};\n"
+if [ -f /app/nginx.conf ]; then
+    cp /app/nginx.conf /etc/nginx/nginx.conf
+else
+    content='user  nginx;\n'
+    # Set the number of worker processes in Nginx
+    content=$content"worker_processes ${USE_NGINX_WORKER_PROCESSES};\n"
+    content=$content'error_log  /var/log/nginx/error.log warn;\n'
+    content=$content'pid        /var/run/nginx.pid;\n'
+    content=$content'events {\n'
+    content=$content"    worker_connections ${NGINX_WORKER_CONNECTIONS};\n"
+    content=$content'}\n'
+    content=$content'http {\n'
+    content=$content'    include       /etc/nginx/mime.types;\n'
+    content=$content'    default_type  application/octet-stream;\n'
+    content=$content'    log_format  main  '"'\$remote_addr - \$remote_user [\$time_local] \"\$request\" '\n"
+    content=$content'                      '"'\$status \$body_bytes_sent \"\$http_referer\" '\n"
+    content=$content'                      '"'\"\$http_user_agent\" \"\$http_x_forwarded_for\"';\n"
+    content=$content'    access_log  /var/log/nginx/access.log  main;\n'
+    content=$content'    sendfile        on;\n'
+    content=$content'    keepalive_timeout  65;\n'
+    content=$content'    include /etc/nginx/conf.d/*.conf;\n'
+    content=$content'}\n'
+    content=$content'daemon off;\n'
+    # Set the max number of open file descriptors for Nginx workers, if requested
+    if [ -n "${NGINX_WORKER_OPEN_FILES}" ] ; then
+        content=$content"worker_rlimit_nofile ${NGINX_WORKER_OPEN_FILES};\n"
+    fi
+    # Save generated /etc/nginx/nginx.conf
+    printf "$content" > /etc/nginx/nginx.conf
+
+    content_server='server {\n'
+    content_server=$content_server"    listen ${USE_LISTEN_PORT};\n"
+    content_server=$content_server'    location / {\n'
+    content_server=$content_server'        include uwsgi_params;\n'
+    content_server=$content_server'        uwsgi_pass unix:///tmp/uwsgi.sock;\n'
+    content_server=$content_server'    }\n'
+    content_server=$content_server'}\n'
+    # Save generated server /etc/nginx/conf.d/nginx.conf
+    printf "$content_server" > /etc/nginx/conf.d/nginx.conf
+
+    # Generate Nginx config for maximum upload file size
+    printf "client_max_body_size $USE_NGINX_MAX_UPLOAD;\n" > /etc/nginx/conf.d/upload.conf
 fi
-# Save generated /etc/nginx/nginx.conf
-printf "$content" > /etc/nginx/nginx.conf
-
-content_server='server {\n'
-content_server=$content_server"    listen ${USE_LISTEN_PORT};\n"
-content_server=$content_server'    location / {\n'
-content_server=$content_server'        include uwsgi_params;\n'
-content_server=$content_server'        uwsgi_pass unix:///tmp/uwsgi.sock;\n'
-content_server=$content_server'    }\n'
-content_server=$content_server'}\n'
-# Save generated server /etc/nginx/conf.d/nginx.conf
-printf "$content_server" > /etc/nginx/conf.d/nginx.conf
-
-# Generate Nginx config for maximum upload file size
-printf "client_max_body_size $USE_NGINX_MAX_UPLOAD;\n" > /etc/nginx/conf.d/upload.conf
 
 exec "$@"
diff --git a/python3.7-alpine3.7/entrypoint.sh b/python3.7-alpine3.7/entrypoint.sh
index e07e2c8..5a34417 100644
--- a/python3.7-alpine3.7/entrypoint.sh
+++ b/python3.7-alpine3.7/entrypoint.sh
@@ -18,44 +18,48 @@ NGINX_WORKER_CONNECTIONS=${NGINX_WORKER_CONNECTIONS:-1024}
 # Get the listen port for Nginx, default to 80
 USE_LISTEN_PORT=${LISTEN_PORT:-80}
 
-content='user  nginx;\n'
-# Set the number of worker processes in Nginx
-content=$content"worker_processes ${USE_NGINX_WORKER_PROCESSES};\n"
-content=$content'error_log  /var/log/nginx/error.log warn;\n'
-content=$content'pid        /var/run/nginx.pid;\n'
-content=$content'events {\n'
-content=$content"    worker_connections ${NGINX_WORKER_CONNECTIONS};\n"
-content=$content'}\n'
-content=$content'http {\n'
-content=$content'    include       /etc/nginx/mime.types;\n'
-content=$content'    default_type  application/octet-stream;\n'
-content=$content'    log_format  main  '"'\$remote_addr - \$remote_user [\$time_local] \"\$request\" '\n"
-content=$content'                      '"'\$status \$body_bytes_sent \"\$http_referer\" '\n"
-content=$content'                      '"'\"\$http_user_agent\" \"\$http_x_forwarded_for\"';\n"
-content=$content'    access_log  /var/log/nginx/access.log  main;\n'
-content=$content'    sendfile        on;\n'
-content=$content'    keepalive_timeout  65;\n'
-content=$content'    include /etc/nginx/conf.d/*.conf;\n'
-content=$content'}\n'
-content=$content'daemon off;\n'
-# Set the max number of open file descriptors for Nginx workers, if requested
-if [ -n "${NGINX_WORKER_OPEN_FILES}" ] ; then
-    content=$content"worker_rlimit_nofile ${NGINX_WORKER_OPEN_FILES};\n"
+if [ -f /app/nginx.conf ]; then
+    cp /app/nginx.conf /etc/nginx/nginx.conf
+else
+    content='user  nginx;\n'
+    # Set the number of worker processes in Nginx
+    content=$content"worker_processes ${USE_NGINX_WORKER_PROCESSES};\n"
+    content=$content'error_log  /var/log/nginx/error.log warn;\n'
+    content=$content'pid        /var/run/nginx.pid;\n'
+    content=$content'events {\n'
+    content=$content"    worker_connections ${NGINX_WORKER_CONNECTIONS};\n"
+    content=$content'}\n'
+    content=$content'http {\n'
+    content=$content'    include       /etc/nginx/mime.types;\n'
+    content=$content'    default_type  application/octet-stream;\n'
+    content=$content'    log_format  main  '"'\$remote_addr - \$remote_user [\$time_local] \"\$request\" '\n"
+    content=$content'                      '"'\$status \$body_bytes_sent \"\$http_referer\" '\n"
+    content=$content'                      '"'\"\$http_user_agent\" \"\$http_x_forwarded_for\"';\n"
+    content=$content'    access_log  /var/log/nginx/access.log  main;\n'
+    content=$content'    sendfile        on;\n'
+    content=$content'    keepalive_timeout  65;\n'
+    content=$content'    include /etc/nginx/conf.d/*.conf;\n'
+    content=$content'}\n'
+    content=$content'daemon off;\n'
+    # Set the max number of open file descriptors for Nginx workers, if requested
+    if [ -n "${NGINX_WORKER_OPEN_FILES}" ] ; then
+        content=$content"worker_rlimit_nofile ${NGINX_WORKER_OPEN_FILES};\n"
+    fi
+    # Save generated /etc/nginx/nginx.conf
+    printf "$content" > /etc/nginx/nginx.conf
+
+    content_server='server {\n'
+    content_server=$content_server"    listen ${USE_LISTEN_PORT};\n"
+    content_server=$content_server'    location / {\n'
+    content_server=$content_server'        include uwsgi_params;\n'
+    content_server=$content_server'        uwsgi_pass unix:///tmp/uwsgi.sock;\n'
+    content_server=$content_server'    }\n'
+    content_server=$content_server'}\n'
+    # Save generated server /etc/nginx/conf.d/nginx.conf
+    printf "$content_server" > /etc/nginx/conf.d/nginx.conf
+
+    # Generate Nginx config for maximum upload file size
+    printf "client_max_body_size $USE_NGINX_MAX_UPLOAD;\n" > /etc/nginx/conf.d/upload.conf
 fi
-# Save generated /etc/nginx/nginx.conf
-printf "$content" > /etc/nginx/nginx.conf
-
-content_server='server {\n'
-content_server=$content_server"    listen ${USE_LISTEN_PORT};\n"
-content_server=$content_server'    location / {\n'
-content_server=$content_server'        include uwsgi_params;\n'
-content_server=$content_server'        uwsgi_pass unix:///tmp/uwsgi.sock;\n'
-content_server=$content_server'    }\n'
-content_server=$content_server'}\n'
-# Save generated server /etc/nginx/conf.d/nginx.conf
-printf "$content_server" > /etc/nginx/conf.d/nginx.conf
-
-# Generate Nginx config for maximum upload file size
-printf "client_max_body_size $USE_NGINX_MAX_UPLOAD;\n" > /etc/nginx/conf.d/upload.conf
 
 exec "$@"
diff --git a/python3.7-alpine3.8/entrypoint.sh b/python3.7-alpine3.8/entrypoint.sh
index e07e2c8..5a34417 100644
--- a/python3.7-alpine3.8/entrypoint.sh
+++ b/python3.7-alpine3.8/entrypoint.sh
@@ -18,44 +18,48 @@ NGINX_WORKER_CONNECTIONS=${NGINX_WORKER_CONNECTIONS:-1024}
 # Get the listen port for Nginx, default to 80
 USE_LISTEN_PORT=${LISTEN_PORT:-80}
 
-content='user  nginx;\n'
-# Set the number of worker processes in Nginx
-content=$content"worker_processes ${USE_NGINX_WORKER_PROCESSES};\n"
-content=$content'error_log  /var/log/nginx/error.log warn;\n'
-content=$content'pid        /var/run/nginx.pid;\n'
-content=$content'events {\n'
-content=$content"    worker_connections ${NGINX_WORKER_CONNECTIONS};\n"
-content=$content'}\n'
-content=$content'http {\n'
-content=$content'    include       /etc/nginx/mime.types;\n'
-content=$content'    default_type  application/octet-stream;\n'
-content=$content'    log_format  main  '"'\$remote_addr - \$remote_user [\$time_local] \"\$request\" '\n"
-content=$content'                      '"'\$status \$body_bytes_sent \"\$http_referer\" '\n"
-content=$content'                      '"'\"\$http_user_agent\" \"\$http_x_forwarded_for\"';\n"
-content=$content'    access_log  /var/log/nginx/access.log  main;\n'
-content=$content'    sendfile        on;\n'
-content=$content'    keepalive_timeout  65;\n'
-content=$content'    include /etc/nginx/conf.d/*.conf;\n'
-content=$content'}\n'
-content=$content'daemon off;\n'
-# Set the max number of open file descriptors for Nginx workers, if requested
-if [ -n "${NGINX_WORKER_OPEN_FILES}" ] ; then
-    content=$content"worker_rlimit_nofile ${NGINX_WORKER_OPEN_FILES};\n"
+if [ -f /app/nginx.conf ]; then
+    cp /app/nginx.conf /etc/nginx/nginx.conf
+else
+    content='user  nginx;\n'
+    # Set the number of worker processes in Nginx
+    content=$content"worker_processes ${USE_NGINX_WORKER_PROCESSES};\n"
+    content=$content'error_log  /var/log/nginx/error.log warn;\n'
+    content=$content'pid        /var/run/nginx.pid;\n'
+    content=$content'events {\n'
+    content=$content"    worker_connections ${NGINX_WORKER_CONNECTIONS};\n"
+    content=$content'}\n'
+    content=$content'http {\n'
+    content=$content'    include       /etc/nginx/mime.types;\n'
+    content=$content'    default_type  application/octet-stream;\n'
+    content=$content'    log_format  main  '"'\$remote_addr - \$remote_user [\$time_local] \"\$request\" '\n"
+    content=$content'                      '"'\$status \$body_bytes_sent \"\$http_referer\" '\n"
+    content=$content'                      '"'\"\$http_user_agent\" \"\$http_x_forwarded_for\"';\n"
+    content=$content'    access_log  /var/log/nginx/access.log  main;\n'
+    content=$content'    sendfile        on;\n'
+    content=$content'    keepalive_timeout  65;\n'
+    content=$content'    include /etc/nginx/conf.d/*.conf;\n'
+    content=$content'}\n'
+    content=$content'daemon off;\n'
+    # Set the max number of open file descriptors for Nginx workers, if requested
+    if [ -n "${NGINX_WORKER_OPEN_FILES}" ] ; then
+        content=$content"worker_rlimit_nofile ${NGINX_WORKER_OPEN_FILES};\n"
+    fi
+    # Save generated /etc/nginx/nginx.conf
+    printf "$content" > /etc/nginx/nginx.conf
+
+    content_server='server {\n'
+    content_server=$content_server"    listen ${USE_LISTEN_PORT};\n"
+    content_server=$content_server'    location / {\n'
+    content_server=$content_server'        include uwsgi_params;\n'
+    content_server=$content_server'        uwsgi_pass unix:///tmp/uwsgi.sock;\n'
+    content_server=$content_server'    }\n'
+    content_server=$content_server'}\n'
+    # Save generated server /etc/nginx/conf.d/nginx.conf
+    printf "$content_server" > /etc/nginx/conf.d/nginx.conf
+
+    # Generate Nginx config for maximum upload file size
+    printf "client_max_body_size $USE_NGINX_MAX_UPLOAD;\n" > /etc/nginx/conf.d/upload.conf
 fi
-# Save generated /etc/nginx/nginx.conf
-printf "$content" > /etc/nginx/nginx.conf
-
-content_server='server {\n'
-content_server=$content_server"    listen ${USE_LISTEN_PORT};\n"
-content_server=$content_server'    location / {\n'
-content_server=$content_server'        include uwsgi_params;\n'
-content_server=$content_server'        uwsgi_pass unix:///tmp/uwsgi.sock;\n'
-content_server=$content_server'    }\n'
-content_server=$content_server'}\n'
-# Save generated server /etc/nginx/conf.d/nginx.conf
-printf "$content_server" > /etc/nginx/conf.d/nginx.conf
-
-# Generate Nginx config for maximum upload file size
-printf "client_max_body_size $USE_NGINX_MAX_UPLOAD;\n" > /etc/nginx/conf.d/upload.conf
 
 exec "$@"
diff --git a/python3.7/entrypoint.sh b/python3.7/entrypoint.sh
index 5306a8a..343dda1 100644
--- a/python3.7/entrypoint.sh
+++ b/python3.7/entrypoint.sh
@@ -14,44 +14,48 @@ NGINX_WORKER_CONNECTIONS=${NGINX_WORKER_CONNECTIONS:-1024}
 # Get the listen port for Nginx, default to 80
 USE_LISTEN_PORT=${LISTEN_PORT:-80}
 
-content='user  nginx;\n'
-# Set the number of worker processes in Nginx
-content=$content"worker_processes ${USE_NGINX_WORKER_PROCESSES};\n"
-content=$content'error_log  /var/log/nginx/error.log warn;\n'
-content=$content'pid        /var/run/nginx.pid;\n'
-content=$content'events {\n'
-content=$content"    worker_connections ${NGINX_WORKER_CONNECTIONS};\n"
-content=$content'}\n'
-content=$content'http {\n'
-content=$content'    include       /etc/nginx/mime.types;\n'
-content=$content'    default_type  application/octet-stream;\n'
-content=$content'    log_format  main  '"'\$remote_addr - \$remote_user [\$time_local] \"\$request\" '\n"
-content=$content'                      '"'\$status \$body_bytes_sent \"\$http_referer\" '\n"
-content=$content'                      '"'\"\$http_user_agent\" \"\$http_x_forwarded_for\"';\n"
-content=$content'    access_log  /var/log/nginx/access.log  main;\n'
-content=$content'    sendfile        on;\n'
-content=$content'    keepalive_timeout  65;\n'
-content=$content'    include /etc/nginx/conf.d/*.conf;\n'
-content=$content'}\n'
-content=$content'daemon off;\n'
-# Set the max number of open file descriptors for Nginx workers, if requested
-if [ -n "${NGINX_WORKER_OPEN_FILES}" ] ; then
-    content=$content"worker_rlimit_nofile ${NGINX_WORKER_OPEN_FILES};\n"
+if [ -f /app/nginx.conf ]; then
+    cp /app/nginx.conf /etc/nginx/nginx.conf
+else
+    content='user  nginx;\n'
+    # Set the number of worker processes in Nginx
+    content=$content"worker_processes ${USE_NGINX_WORKER_PROCESSES};\n"
+    content=$content'error_log  /var/log/nginx/error.log warn;\n'
+    content=$content'pid        /var/run/nginx.pid;\n'
+    content=$content'events {\n'
+    content=$content"    worker_connections ${NGINX_WORKER_CONNECTIONS};\n"
+    content=$content'}\n'
+    content=$content'http {\n'
+    content=$content'    include       /etc/nginx/mime.types;\n'
+    content=$content'    default_type  application/octet-stream;\n'
+    content=$content'    log_format  main  '"'\$remote_addr - \$remote_user [\$time_local] \"\$request\" '\n"
+    content=$content'                      '"'\$status \$body_bytes_sent \"\$http_referer\" '\n"
+    content=$content'                      '"'\"\$http_user_agent\" \"\$http_x_forwarded_for\"';\n"
+    content=$content'    access_log  /var/log/nginx/access.log  main;\n'
+    content=$content'    sendfile        on;\n'
+    content=$content'    keepalive_timeout  65;\n'
+    content=$content'    include /etc/nginx/conf.d/*.conf;\n'
+    content=$content'}\n'
+    content=$content'daemon off;\n'
+    # Set the max number of open file descriptors for Nginx workers, if requested
+    if [ -n "${NGINX_WORKER_OPEN_FILES}" ] ; then
+        content=$content"worker_rlimit_nofile ${NGINX_WORKER_OPEN_FILES};\n"
+    fi
+    # Save generated /etc/nginx/nginx.conf
+    printf "$content" > /etc/nginx/nginx.conf
+
+    content_server='server {\n'
+    content_server=$content_server"    listen ${USE_LISTEN_PORT};\n"
+    content_server=$content_server'    location / {\n'
+    content_server=$content_server'        include uwsgi_params;\n'
+    content_server=$content_server'        uwsgi_pass unix:///tmp/uwsgi.sock;\n'
+    content_server=$content_server'    }\n'
+    content_server=$content_server'}\n'
+    # Save generated server /etc/nginx/conf.d/nginx.conf
+    printf "$content_server" > /etc/nginx/conf.d/nginx.conf
+
+    # Generate Nginx config for maximum upload file size
+    printf "client_max_body_size $USE_NGINX_MAX_UPLOAD;\n" > /etc/nginx/conf.d/upload.conf
 fi
-# Save generated /etc/nginx/nginx.conf
-printf "$content" > /etc/nginx/nginx.conf
-
-content_server='server {\n'
-content_server=$content_server"    listen ${USE_LISTEN_PORT};\n"
-content_server=$content_server'    location / {\n'
-content_server=$content_server'        include uwsgi_params;\n'
-content_server=$content_server'        uwsgi_pass unix:///tmp/uwsgi.sock;\n'
-content_server=$content_server'    }\n'
-content_server=$content_server'}\n'
-# Save generated server /etc/nginx/conf.d/nginx.conf
-printf "$content_server" > /etc/nginx/conf.d/nginx.conf
-
-# Generate Nginx config for maximum upload file size
-printf "client_max_body_size $USE_NGINX_MAX_UPLOAD;\n" > /etc/nginx/conf.d/upload.conf
 
 exec "$@"
diff --git a/tests/test_02_app/custom_nginx_app/app/main.py b/tests/test_02_app/custom_nginx_app/app/main.py
new file mode 100644
index 0000000..8033a67
--- /dev/null
+++ b/tests/test_02_app/custom_nginx_app/app/main.py
@@ -0,0 +1,10 @@
+import sys
+
+
+def application(env, start_response):
+    version = "{}.{}".format(sys.version_info.major, sys.version_info.minor)
+    start_response("200 OK", [("Content-Type", "text/plain")])
+    message = "Hello World from Nginx uWSGI Python {} app in a Docker container".format(
+        version
+    )
+    return [message.encode("utf-8")]
diff --git a/tests/test_02_app/custom_nginx_app/app/nginx.conf b/tests/test_02_app/custom_nginx_app/app/nginx.conf
new file mode 100644
index 0000000..91365b9
--- /dev/null
+++ b/tests/test_02_app/custom_nginx_app/app/nginx.conf
@@ -0,0 +1,25 @@
+user  nginx;
+worker_processes 2;
+error_log  /var/log/nginx/error.log warn;
+pid        /var/run/nginx.pid;
+events {
+    worker_connections 2048;
+}
+http {
+    include       /etc/nginx/mime.types;
+    default_type  application/octet-stream;
+    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
+                      '$status $body_bytes_sent "$http_referer" '
+                      '"$http_user_agent" "$http_x_forwarded_for"';
+    access_log  /var/log/nginx/access.log  main;
+    sendfile        on;
+    keepalive_timeout  300;
+    server {
+        listen 8080;
+        location / {
+            include uwsgi_params;
+            uwsgi_pass unix:///tmp/uwsgi.sock;
+        }
+    }
+}
+daemon off;
diff --git a/tests/test_02_app/custom_nginx_app/latest.dockerfile b/tests/test_02_app/custom_nginx_app/latest.dockerfile
new file mode 100644
index 0000000..2232d39
--- /dev/null
+++ b/tests/test_02_app/custom_nginx_app/latest.dockerfile
@@ -0,0 +1,3 @@
+FROM tiangolo/uwsgi-nginx:latest
+
+COPY app /app
diff --git a/tests/test_02_app/custom_nginx_app/python2.7-alpine3.7.dockerfile b/tests/test_02_app/custom_nginx_app/python2.7-alpine3.7.dockerfile
new file mode 100644
index 0000000..26ad9a5
--- /dev/null
+++ b/tests/test_02_app/custom_nginx_app/python2.7-alpine3.7.dockerfile
@@ -0,0 +1,3 @@
+FROM tiangolo/uwsgi-nginx:python2.7-alpine3.7
+
+COPY app /app
\ No newline at end of file
diff --git a/tests/test_02_app/custom_nginx_app/python2.7-alpine3.8.dockerfile b/tests/test_02_app/custom_nginx_app/python2.7-alpine3.8.dockerfile
new file mode 100644
index 0000000..40ccdcc
--- /dev/null
+++ b/tests/test_02_app/custom_nginx_app/python2.7-alpine3.8.dockerfile
@@ -0,0 +1,3 @@
+FROM tiangolo/uwsgi-nginx:python2.7-alpine3.8
+
+COPY app /app
diff --git a/tests/test_02_app/custom_nginx_app/python2.7.dockerfile b/tests/test_02_app/custom_nginx_app/python2.7.dockerfile
new file mode 100644
index 0000000..96c7d3c
--- /dev/null
+++ b/tests/test_02_app/custom_nginx_app/python2.7.dockerfile
@@ -0,0 +1,3 @@
+FROM tiangolo/uwsgi-nginx:python2.7
+
+COPY app /app
diff --git a/tests/test_02_app/custom_nginx_app/python3.5.dockerfile b/tests/test_02_app/custom_nginx_app/python3.5.dockerfile
new file mode 100644
index 0000000..f20bde3
--- /dev/null
+++ b/tests/test_02_app/custom_nginx_app/python3.5.dockerfile
@@ -0,0 +1,3 @@
+FROM tiangolo/uwsgi-nginx:python3.5
+
+COPY app /app
diff --git a/tests/test_02_app/custom_nginx_app/python3.6-alpine3.7.dockerfile b/tests/test_02_app/custom_nginx_app/python3.6-alpine3.7.dockerfile
new file mode 100644
index 0000000..8a4a434
--- /dev/null
+++ b/tests/test_02_app/custom_nginx_app/python3.6-alpine3.7.dockerfile
@@ -0,0 +1,3 @@
+FROM tiangolo/uwsgi-nginx:python3.6-alpine3.7
+
+COPY app /app
diff --git a/tests/test_02_app/custom_nginx_app/python3.6-alpine3.8.dockerfile b/tests/test_02_app/custom_nginx_app/python3.6-alpine3.8.dockerfile
new file mode 100644
index 0000000..cd890ef
--- /dev/null
+++ b/tests/test_02_app/custom_nginx_app/python3.6-alpine3.8.dockerfile
@@ -0,0 +1,3 @@
+FROM tiangolo/uwsgi-nginx:python3.6-alpine3.8
+
+COPY app /app
diff --git a/tests/test_02_app/custom_nginx_app/python3.6.dockerfile b/tests/test_02_app/custom_nginx_app/python3.6.dockerfile
new file mode 100644
index 0000000..77ea266
--- /dev/null
+++ b/tests/test_02_app/custom_nginx_app/python3.6.dockerfile
@@ -0,0 +1,3 @@
+FROM tiangolo/uwsgi-nginx:python3.6
+
+COPY app /app
diff --git a/tests/test_02_app/custom_nginx_app/python3.7-alpine3.7.dockerfile b/tests/test_02_app/custom_nginx_app/python3.7-alpine3.7.dockerfile
new file mode 100644
index 0000000..3dd26af
--- /dev/null
+++ b/tests/test_02_app/custom_nginx_app/python3.7-alpine3.7.dockerfile
@@ -0,0 +1,3 @@
+FROM tiangolo/uwsgi-nginx:python3.7-alpine3.7
+
+COPY app /app
diff --git a/tests/test_02_app/custom_nginx_app/python3.7-alpine3.8.dockerfile b/tests/test_02_app/custom_nginx_app/python3.7-alpine3.8.dockerfile
new file mode 100644
index 0000000..54b4cc5
--- /dev/null
+++ b/tests/test_02_app/custom_nginx_app/python3.7-alpine3.8.dockerfile
@@ -0,0 +1,3 @@
+FROM tiangolo/uwsgi-nginx:python3.7-alpine3.8
+
+COPY app /app
diff --git a/tests/test_02_app/custom_nginx_app/python3.7.dockerfile b/tests/test_02_app/custom_nginx_app/python3.7.dockerfile
new file mode 100644
index 0000000..fedf2ed
--- /dev/null
+++ b/tests/test_02_app/custom_nginx_app/python3.7.dockerfile
@@ -0,0 +1,3 @@
+FROM tiangolo/uwsgi-nginx:python3.7
+
+COPY app /app
diff --git a/tests/test_02_app/test_custom_nginx_app.py b/tests/test_02_app/test_custom_nginx_app.py
new file mode 100644
index 0000000..5840ff0
--- /dev/null
+++ b/tests/test_02_app/test_custom_nginx_app.py
@@ -0,0 +1,122 @@
+import time
+from pathlib import Path, PurePath
+
+import docker
+import pytest
+import requests
+
+from ..utils import (
+    CONTAINER_NAME,
+    get_logs,
+    get_nginx_config,
+    remove_previous_container,
+)
+
+client = docker.from_env()
+
+
+def verify_container(container, response_text):
+    nginx_config = get_nginx_config(container)
+    assert "client_max_body_size 0;" not in nginx_config
+    assert "worker_processes 2;" in nginx_config
+    assert "listen 8080;" in nginx_config
+    assert "worker_connections 2048;" in nginx_config
+    assert "worker_rlimit_nofile;" not in nginx_config
+    assert "daemon off;" in nginx_config
+    assert "include uwsgi_params;" in nginx_config
+    assert "uwsgi_pass unix:///tmp/uwsgi.sock;" in nginx_config
+    assert "keepalive_timeout  300;" in nginx_config
+    logs = get_logs(container)
+    assert "getting INI configuration from /app/uwsgi.ini" in logs
+    assert "getting INI configuration from /etc/uwsgi/uwsgi.ini" in logs
+    assert "ini = /app/uwsgi.ini" in logs
+    assert "ini = /etc/uwsgi/uwsgi.ini" in logs
+    assert "socket = /tmp/uwsgi.sock" in logs
+    assert "chown-socket = nginx:nginx" in logs
+    assert "chmod-socket = 664" in logs
+    assert "hook-master-start = unix_signal:15 gracefully_kill_them_all" in logs
+    assert "need-app = true" in logs
+    assert "die-on-term = true" in logs
+    assert "show-config = true" in logs
+    assert "wsgi-file = /app/main.py" in logs
+    assert "processes = 16" in logs
+    assert "cheaper = 2" in logs
+    assert "spawned uWSGI master process" in logs
+    assert "spawned uWSGI worker 1" in logs
+    assert "spawned uWSGI worker 2" in logs
+    assert "spawned uWSGI worker 3" not in logs
+    assert 'running "unix_signal:15 gracefully_kill_them_all" (master-start)' in logs
+    assert "success: nginx entered RUNNING state, process has stayed up for" in logs
+    assert "success: uwsgi entered RUNNING state, process has stayed up for" in logs
+    response = requests.get("http://127.0.0.1:8080")
+    assert response.status_code == 200
+    assert response.text == response_text
+
+
+@pytest.mark.parametrize(
+    "dockerfile,response_text",
+    [
+        (
+            "python2.7.dockerfile",
+            "Hello World from Nginx uWSGI Python 2.7 app in a Docker container",
+        ),
+        (
+            "python2.7-alpine3.7.dockerfile",
+            "Hello World from Nginx uWSGI Python 2.7 app in a Docker container",
+        ),
+        (
+            "python2.7-alpine3.8.dockerfile",
+            "Hello World from Nginx uWSGI Python 2.7 app in a Docker container",
+        ),
+        (
+            "python3.5.dockerfile",
+            "Hello World from Nginx uWSGI Python 3.5 app in a Docker container",
+        ),
+        (
+            "python3.6.dockerfile",
+            "Hello World from Nginx uWSGI Python 3.6 app in a Docker container",
+        ),
+        (
+            "python3.6-alpine3.7.dockerfile",
+            "Hello World from Nginx uWSGI Python 3.6 app in a Docker container",
+        ),
+        (
+            "python3.6-alpine3.8.dockerfile",
+            "Hello World from Nginx uWSGI Python 3.6 app in a Docker container",
+        ),
+        (
+            "python3.7.dockerfile",
+            "Hello World from Nginx uWSGI Python 3.7 app in a Docker container",
+        ),
+        (
+            "latest.dockerfile",
+            "Hello World from Nginx uWSGI Python 3.7 app in a Docker container",
+        ),
+        # (
+        #     "python3.7-alpine3.7.dockerfile",
+        #     "Hello World from Nginx uWSGI Python 3.7 app in a Docker container",
+        # ),
+        # (
+        #     "python3.7-alpine3.8.dockerfile",
+        #     "Hello World from Nginx uWSGI Python 3.7 app in a Docker container",
+        # ),
+    ],
+)
+def test_env_vars_1(dockerfile, response_text):
+    remove_previous_container(client)
+    tag = "uwsgi-nginx-testimage"
+    test_path: PurePath = Path(__file__)
+    path = test_path.parent / "custom_nginx_app"
+    client.images.build(path=str(path), dockerfile=dockerfile, tag=tag)
+    container = client.containers.run(
+        tag, name=CONTAINER_NAME, ports={"8080": "8080"}, detach=True
+    )
+    time.sleep(3)
+    verify_container(container, response_text)
+    container.stop()
+    # Test that everything works after restarting too
+    container.start()
+    time.sleep(3)
+    verify_container(container, response_text)
+    container.stop()
+    container.remove()