build_and_push_changed_dockerfiles.yml

name: Build all changed Dockerfiles

on:
  push:
    branches:
      - master
    paths:
      - '**/Dockerfile'
  pull_request:
    branches:
      - master
    paths:
      - '**/Dockerfile'

jobs:
  provide_changed_files:
    runs-on: ubuntu-latest
    steps:
      -
        name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0 # get all commits
      -
        name: Get changed files
        id: changed-files
        uses: tj-actions/changed-files@v43
        with:
          separator: "', '"
          since_last_remote_commit: "true"
          files: |
            **/Dockerfile
      -
        name: Echo the changed files
        id: changes
        run: |
          changed_list="['${{ steps.changed-files.outputs.all_modified_files }}']";
          echo "matrix=$changed_list" >> $GITHUB_OUTPUT;
    outputs:
      matrix: ${{ steps.changes.outputs.matrix }}
  docker:
    runs-on: ubuntu-latest
    needs: provide_changed_files
    if: "join(fromJSON(needs.provide_changed_files.outputs.matrix), '') != ''" # preoceed only when we have something to build
    strategy:
      matrix:
        files: ${{fromJSON(needs.provide_changed_files.outputs.matrix)}}
    steps:
      -
        name: Free Disk Space (Ubuntu)
        uses: jlumbroso/free-disk-space@main
        with:
          # this might remove tools that are actually needed,
          # if set to "true" but frees about 6 GB
          tool-cache: true
          # all of these default to true, but feel free to set to
          # "false" if necessary for your workflow
          android: true
          dotnet: true
          haskell: true
          large-packages: false
          docker-images: false
          swap-storage: true
      -
        name: Checkout
        uses: actions/checkout@v4
#       -
#         name: Set up QEMU
#         uses: docker/setup-qemu-action@v2
      -
        name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
      -
        name: Get path and create tag
        id: dockerfile
        run: |
          filepath=${{ matrix.files }};
          echo "path=$filepath" >> $GITHUB_OUTPUT;
          py_ver=$(echo $filepath | grep 'python-' | sed 's/.*\/python-\([0-9]*\)[\.]*\([0-9]*\)[^/]*.*Dockerfile/-py\1\2/');
          tag=$(echo $filepath | sed 's/pytorch-\([0-9\.]*\).*\/cuda-\([0-9]*\)[\.]*\([0-9]*\)[^/]*.*Dockerfile/\1-cu\2\3/' | sed 's/\(.*\)\/Dockerfile/\1/' | sed 's/\//-/g');
          echo "tag=${tag}${py_ver}" >> $GITHUB_OUTPUT;
          date="$(TZ='UTC' date +'%Y%m%d')";
          tag_date="${tag}-${date}";
          echo "tag_date=${tag_date}" >> $GITHUB_OUTPUT;
      -
        name: Login to DockerHub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
      -
        name: Login to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GIT_PACKAGES_TOKEN }}
      -
        name: Build and push Docker Hub
        uses: docker/build-push-action@v5
        with:
          context: .
          file: ${{ steps.dockerfile.outputs.path }}
          push: true
          tags: |
            ${{ secrets.DOCKERHUB_USERNAME }}/${{ github.event.repository.name }}:${{ steps.dockerfile.outputs.tag }}
            ${{ secrets.DOCKERHUB_USERNAME }}/${{ github.event.repository.name }}:${{ steps.dockerfile.outputs.tag_date }}
            ghcr.io/${{ github.repository_owner }}/${{ github.event.repository.name }}:${{ steps.dockerfile.outputs.tag }}
            ghcr.io/${{ github.repository_owner }}/${{ github.event.repository.name }}:${{ steps.dockerfile.outputs.tag_date }}