docker-build-push.yml

name: Docker Build and Push

on:
  push:
    branches:
      - "main"

jobs:
  generate-matrix:
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.set-matrix.outputs.matrix }}
      run_docker_jobs: ${{ steps.set-run-docker-jobs.outputs.run_docker_jobs }}
    steps:
      - name: Checkout code
        uses: actions/checkout@v3
        with:
          fetch-depth: ${{ github.event_name == 'pull_request' && 2 || 0 }}
      - name: Set Matrix
        id: set-matrix
        run: |
          echo "matrix=$(python3 bin/generate_matrix.py submittyrpi false ${{ github.event.before }} ${{ github.event.after }})" >> $GITHUB_OUTPUT
      - name: List Matrix
        run: |
          echo ${{ steps.set-matrix.outputs.matrix }}
      - name: Set Run Condition
        id: set-run-docker-jobs
        run: |
          num_to_build=$(echo '${{ steps.set-matrix.outputs.matrix }}' | jq '.include | length')
          if [[ "$num_to_build" -eq 0 ]]; then
            echo "run_docker_jobs=false" >> $GITHUB_OUTPUT
          else
            echo "run_docker_jobs=true" >> $GITHUB_OUTPUT
          fi
  docker:
    needs:
      - generate-matrix
    if: needs.generate-matrix.outputs.run_docker_jobs == 'true'
    runs-on: ubuntu-latest
    strategy:
      fail-fast: true
      matrix: ${{ fromJson(needs.generate-matrix.outputs.matrix) }}
    steps:
      - name: Check out repo
        uses: actions/checkout@v3
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
      - name: Docker Hub login
        uses: docker/login-action@releases/v1
        with:
          username: ${{ secrets.DOCKER_USERNAME_SUBMITTYRPI }}
          password: ${{ secrets.DOCKER_PASSWORD_SUBMITTYRPI }}
      - name: Build and push docker
        uses: docker/build-push-action@v4
        with:
          context: ${{ matrix.context }}
          push: true
          tags: ${{ matrix.tags }}
          platforms: linux/amd64,linux/arm64