Make the docker Image pack:base built on the same base image as pack:x.x.x-base

[hhiroshell]

Summary

Currently, the docker image pack:base is built on the same base image as tiny. But it is considered that the image should be based on the same image as pack:x.x.x-base, so this PR corrects it.

This PR make changes below:

• Add ${{ matrix.suffix }} to the source tag for retagging in the delivery-docker.yml, making the pack:base image.
• Make a small fix to the helper script for testing the GitHub Action workflows on forked repositories.

Output

Before

• The pack:x.x.x-base doesn't have sh

$ docker run --rm -it --entrypoint sh buildpacksio/pack:base
docker: Error response from daemon: failed to create task for container: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: exec: "sh": executable file not found in $PATH: unknown.

After

Tested using images build with my fork repository.

• The pack:x.x.x-base and pack:base has the sh and echo

$ docker run --rm -it --entrypoint sh ghcr.io/hhiroshell/pack:0.2.0-base
Unable to find image 'ghcr.io/hhiroshell/pack:0.2.0-base' locally
0.2.0-base: Pulling from hhiroshell/pack
3713021b0277: Already exists
b8d22795b29f: Pull complete
Digest: sha256:e914b59c36cd8dd90fdd05a98233219b2518d29629be775cbd058747fea8af63
Status: Downloaded newer image for ghcr.io/hhiroshell/pack:0.2.0-base
# echo aaaa
aaaa

$ docker run --rm -it --entrypoint sh ghcr.io/hhiroshell/pack:base
Unable to find image 'ghcr.io/hhiroshell/pack:base' locally
base: Pulling from hhiroshell/pack
Digest: sha256:e914b59c36cd8dd90fdd05a98233219b2518d29629be775cbd058747fea8af63
Status: Downloaded newer image for ghcr.io/hhiroshell/pack:base
# echo aaaa
aaaa

• The pack:latest and pack:xxx doesn't have sh, because based on the distroless

$ docker run --rm -it --entrypoint sh ghcr.io/hhiroshell/pack:latest
Unable to find image 'ghcr.io/hhiroshell/pack:latest' locally
latest: Pulling from hhiroshell/pack
f531499c6b73: Pull complete
...
Digest: sha256:5ff2af78112489da719204239161dc98d32927f5c40b72cc8bab5ab726467c77
Status: Downloaded newer image for ghcr.io/hhiroshell/pack:latest
docker: Error response from daemon: failed to create task for container: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: exec: "sh": executable file not found in $PATH: unknown.

$ docker run --rm -it --entrypoint sh ghcr.io/hhiroshell/pack:0.2.0
Unable to find image 'ghcr.io/hhiroshell/pack:0.2.0' locally
0.2.0: Pulling from hhiroshell/pack
Digest: sha256:5ff2af78112489da719204239161dc98d32927f5c40b72cc8bab5ab726467c77
Status: Downloaded newer image for ghcr.io/hhiroshell/pack:0.2.0
docker: Error response from daemon: failed to create task for container: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: exec: "sh": executable file not found in $PATH: unknown.

Documentation

• Should this change be documented?
  • Yes, see #___
  • No

Related

Resolves #2111

[natalieparellano]

Looks good to me. Thank you so much for taking this on @hhiroshell and for the detailed testing!