docker-builds.yml

name: Publish Docker Image
# https://www.docker.com/blog/first-docker-github-action-is-here
# https://github.com/docker/build-push-action
on:  # Trigger the workflow on push or pull request, but only for the master branch
  push:
    branches: [ master ]
  pull_request:
    branches:
      - master

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.head_ref }}
  cancel-in-progress: ${{ github.ref != 'refs/heads/master' }}

jobs:
  build-push:
    runs-on: ubuntu-20.04
    strategy:
      fail-fast: false
      matrix:
        python_version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
        opencv_version: ["4.6.0"]
        device: ["cpu", "gpu"]
    steps:
      - name: Checkout
        uses: actions/checkout@v2
      # https://github.com/docker/setup-buildx-action
      # Set up Docker Buildx - to use cache-from and cache-to argument of buildx command
      - uses: docker/setup-buildx-action@v2
      - name: Login to DockerHub
        uses: docker/login-action@v2
        if: github.ref == 'refs/heads/master'
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}
      - uses: docker/build-push-action@v3
        # https://github.com/docker/build-push-action#cache-to-registry
        with:
          build-args: |
            PYTHON_VERSION=${{ matrix.python_version }}
            OPENCV_VERSION=${{ matrix.opencv_version }}
          file: ${{ matrix.device }}/Dockerfile
          # publish master
          push: ${{ github.ref == 'refs/heads/master' }}
          tags: dzynetech/docker_python-opencv-ffmpeg:${{ matrix.device }}-py${{ matrix.python_version }}-cv${{ matrix.opencv_version }}
        timeout-minutes: 240