test-docker-build.yml

# name: Test Docker images (on PR)

# on:
#   pull_request:
#     paths:
#       # Run only when DockerFile files are modified
#       - "docker/**"

# jobs:
#   get_changed_files:
#     name: "Build all modified docker images"
#     runs-on: ubuntu-latest
#     outputs:
#       matrix: ${{ steps.set-matrix.outputs.matrix }}
#     steps:
#       - name: Check out code
#         uses: actions/checkout@v3
#       - name: Get changed files
#         id: changed-files
#         uses: tj-actions/changed-files@3f54ebb830831fc121d3263c1857cfbdc310cdb9 #v42
#         with:
#           files: docker/**
#           json: "true"
#       - name: Run step if only the files listed above change
#         if: steps.changed-files.outputs.any_changed == 'true'
#         id: set-matrix
#         run: |
#           for file in ${{ steps.changed-files.outputs.all_changed_files}}; do
#             echo "$file was changed"
#           done 
#           echo "matrix=${{ steps.changed-files.outputs.all_changed_files}}" >> $GITHUB_OUTPUT
#   build_modified_files:
#     needs: get_changed_files
#     name: Build Docker images on modified files
#     runs-on: ubuntu-latest
#     if: ${{ needs.get_changed_files.outputs.matrix }} != ''
#     strategy:
#       fail-fast: false
#       matrix:
#         docker-file: ${{ fromJson(needs.get_changed_files.outputs.matrix) }}
#     steps:
#       - name: Cleanup disk
#         run: |
#           sudo ls -l /usr/local/lib/
#           sudo ls -l /usr/share/
#           sudo du -sh /usr/local/lib/
#           sudo du -sh /usr/share/
#           sudo rm -rf /usr/local/lib/android
#           sudo rm -rf /usr/share/dotnet
#           sudo du -sh /usr/local/lib/
#           sudo du -sh /usr/share/
#       - name: Set up Docker Buildx
#         uses: docker/setup-buildx-action@v1
#       - name: Check out code
#         uses: actions/checkout@v3
#       - name: Build Docker image
#         uses: docker/build-push-action@v4
#         with:
#           file: ${{ matrix.docker-file }}
#           context: .
#           push: False