chore: don't use 'apk update' or 'apk upgrade' before 'apk ad --no-cache' (#41)

Author: nolanmar511

system-test/Dockerfile.node10-alpine

@@ -1,5 +1,5 @@
 FROM golang:1.12-alpine as builder
-RUN apk update && apk upgrade && apk add --no-cache git
+RUN apk add --no-cache git
 WORKDIR /root/
 RUN go get github.com/google/pprof
 
@@ -8,7 +8,7 @@ FROM node:10-alpine
 
 ARG ADDITIONAL_PACKAGES
 
-RUN apk update && apk upgrade && apk add --no-cache bash $ADDITIONAL_PACKAGES
+RUN apk add --no-cache bash $ADDITIONAL_PACKAGES
 WORKDIR /root/
 COPY --from=0 /go/bin/pprof /bin
 RUN chmod a+x /bin/pprof

system-test/Dockerfile.node11-alpine

@@ -1,5 +1,5 @@
 FROM golang:1.12-alpine as builder
-RUN apk update && apk upgrade && apk add --no-cache git
+RUN apk add --no-cache git
 WORKDIR /root/
 RUN go get github.com/google/pprof
 
@@ -8,7 +8,7 @@ FROM node:11-alpine
 
 ARG ADDITIONAL_PACKAGES
 
-RUN apk update && apk upgrade && apk add --no-cache bash $ADDITIONAL_PACKAGES
+RUN apk add --no-cache bash $ADDITIONAL_PACKAGES
 WORKDIR /root/
 COPY --from=0 /go/bin/pprof /bin
 RUN chmod a+x /bin/pprof

system-test/Dockerfile.node6-alpine

@@ -1,5 +1,5 @@
 FROM golang:1.12-alpine as builder
-RUN apk update && apk upgrade && apk add --no-cache git
+RUN apk add --no-cache git
 WORKDIR /root/
 RUN go get github.com/google/pprof
 
@@ -8,7 +8,7 @@ FROM node:6-alpine
 
 ARG ADDITIONAL_PACKAGES
 
-RUN apk update && apk upgrade && apk add --no-cache bash $ADDITIONAL_PACKAGES
+RUN apk add --no-cache bash $ADDITIONAL_PACKAGES
 WORKDIR /root/
 COPY --from=0 /go/bin/pprof /bin
 RUN chmod a+x /bin/pprof

system-test/Dockerfile.node8-alpine

@@ -1,5 +1,5 @@
 FROM golang:1.12-alpine as builder
-RUN apk update && apk upgrade && apk add --no-cache git
+RUN apk add --no-cache git
 WORKDIR /root/
 RUN go get github.com/google/pprof
 
@@ -8,7 +8,7 @@ FROM node:8-alpine
 
 ARG ADDITIONAL_PACKAGES
 
-RUN apk update && apk upgrade && apk add --no-cache bash $ADDITIONAL_PACKAGES
+RUN apk add --no-cache bash $ADDITIONAL_PACKAGES
 WORKDIR /root/
 COPY --from=0 /go/bin/pprof /bin
 RUN chmod a+x /bin/pprof