fix: create links in entrypoint for files under /home/tooling/.config

[dkwon17]

Files under /home/tooling/.config are not stowed in the entrypoint because it is in the .stow-local-ignore file. Stow ignores everything in the .config folder because the /home/user/.config folder should be created in the entrypoint in order to have proper user permissions required for Podman 5.x.

This PR fixes https://issues.redhat.com/browse/CRW-8932

See #197

How I tested this PR:

1. Build the base image. My base image is: quay.io/dkwon17/base-developer-image:persist-config-files.

cd base/ubi9 && podman image build -t  {base image} .

2. Create the following files somewhere in your filesystem:

Dockerfile

FROM {base image}

COPY test.conf /home/tooling/.config/test/test-nested.conf
COPY test.conf /home/tooling/.config/test.conf
COPY test.conf /home/tooling/.config/test/another/test1.conf
COPY test.conf /home/tooling/.config/test/another/test2.conf
COPY test.conf /home/tooling/.config/composer/keys.dev.pub
COPY test.conf /home/tooling/.config/composer/keys.tags.pub

test.conf

test file

3. Build the image from step 2. I've named my image quay.io/dkwon17/test:persist-config-files

podman build -t {image}.

4. Run the image (podman run {image}) and exec into it. Verify that there are links from files under /home/tooling/.config to /home/user/.config:

~ $ cd .config/
.config $ ls -la
total 4
drwxr-xr-x. 1 user user 62 Jul 10 21:33 .
drwxrwx---. 1 user root 26 Jul 10 21:33 ..
drwxr-xr-x. 1 user user 50 Jul 10 21:33 composer
drwxr-xr-x. 1 user user 24 Jul 10 21:33 containers
drwxr-xr-x. 1 user user 46 Jul 10 21:33 test
lrwxrwxrwx. 1 user user 31 Jul 10 21:33 test.conf -> /home/tooling/.config/test.conf
.config $ cd test
test $ ls -la
total 4
drwxr-xr-x. 1 user user 46 Jul 10 21:33 .
drwxr-xr-x. 1 user user 62 Jul 10 21:33 ..
drwxr-xr-x. 1 user user 40 Jul 10 21:33 another
lrwxrwxrwx. 1 user user 43 Jul 10 21:33 test-nested.conf -> /home/tooling/.config/test/test-nested.conf
test $ cd another/
another $ ls -la
total 8
drwxr-xr-x. 1 user user 40 Jul 10 21:33 .
drwxr-xr-x. 1 user user 46 Jul 10 21:33 ..
lrwxrwxrwx. 1 user user 45 Jul 10 21:33 test1.conf -> /home/tooling/.config/test/another/test1.conf
lrwxrwxrwx. 1 user user 45 Jul 10 21:33 test2.conf -> /home/tooling/.config/test/another/test2.conf
another $ cd ../../composer/
composer $ ls -la
total 8
drwxr-xr-x. 1 user user 50 Jul 10 21:33 .
drwxr-xr-x. 1 user user 62 Jul 10 21:33 ..
lrwxrwxrwx. 1 user user 43 Jul 10 21:33 keys.dev.pub -> /home/tooling/.config/composer/keys.dev.pub
lrwxrwxrwx. 1 user user 44 Jul 10 21:33 keys.tags.pub -> /home/tooling/.config/composer/keys.tags.pub

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[rohanKanojia]

I tested this PR with abovementioned steps and can confirm it's working as expected