Handle upper-case organisation/repo-owner names in a better way

[christian-kreuzberger-dtx]

When using this template with a username that has uppercase characters, e.g., @Raffy23, we ended up getting problems when pushing to ghcr.io using the following workflow:

keptn-service-template-go/.github/workflows/CI.yml

Lines 130 to 139 in d1b3d39

	- name: Docker Build
	id: docker_build
	uses: keptn/gh-automation/.github/actions/[email protected]
	with:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	TAGS: |
	ghcr.io/${{ github.repository_owner }}/${{ env.IMAGE }}:${{ env.VERSION }}
	BUILD_ARGS: |
	version=${{ env.VERSION }}
	PUSH: ${{(github.event_name == 'push' || github.event_name == 'workflow_dispatch' || github.event.pull_request.head.repo.full_name == github.repository)}}

This was partially addressed in keptn/gh-automation (see PRs #20, #18, #15), but it's still not a very satisfying solution as it adds complexity to keptn/gh-automation.

According to docker-build-push-action Troubleshooting, a better solution would be to sanitize the repo owner directly in your workflow:

- name: Sanitize repo owner
  uses: actions/github-script@v4
  id: repo_slug
  with:
    result-encoding: string
    script: return '${{ github.repository_owner }}'.toLowerCase()

- name: Build and push
  uses: docker/build-push-action@v2
  with:
    context: .
    push: true
    tags: ghcr.io/${{ steps.repo_slug.outputs.result }}/${{ env.IMAGE }}:${{ env.VERSION }}

Definition of done

• Sanitize repository_owner in all affected workflows in keptn-service-template-go, and use sanitized string instead of github.repository_owner
• Proof that it works using upper-cased GitHub username and provide screenshots

Affected Workflows

• CI - https://github.com/keptn-sandbox/keptn-service-template-go/blob/main/.github/workflows/CI.yml
• Pre-Release - https://github.com/keptn-sandbox/keptn-service-template-go/blob/main/.github/workflows/pre-release.yml
• Release - https://github.com/keptn-sandbox/keptn-service-template-go/blob/main/.github/workflows/release.yml

[mehabhalodiya]

@christian-kreuzberger-dtx Can you please assign this to me?
Not an expert in GH actions though, I would like to help with some of your guidance. Thanks!

[christian-kreuzberger-dtx]

@mehabhalodiya any update?