docker-publish.yml

name: Docker

on:
  push:
    # Publish `master` as Docker `latest` image and `bX.Y` as X.Y.
    branches:
      - master
      - b*

    # # Publish `v1.2.3` tags as releases.
    tags:
      - v*
    
  release:
    types: [published]

  # Run tests for any PRs.
  pull_request:

env:
  IMAGE_NAME: osmirnov/radiopadre
  REGISTRY: quay.io

jobs:
  # Run tests.
  # See also https://docs.docker.com/docker-hub/builds/automated-testing/
  test:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2

      - name: Run tests
        run: |
          if [ -f docker-compose.test.yml ]; then
            docker-compose --file docker-compose.test.yml build
            docker-compose --file docker-compose.test.yml run sut
          else
            docker build . --file Dockerfile
          fi

  # Push image to GitHub Packages.
  # See also https://docs.docker.com/docker-hub/builds/
  push:
    # Ensure test job passes before pushing image.
    needs: test

    runs-on: ubuntu-latest
    if: github.event_name == 'push'

    steps:
      - uses: actions/checkout@v2

      - name: Log into docker registry
      # TODO: Create a PAT with `read:packages` and `write:packages` scopes and save it as an Actions secret `CR_PAT`
        run: echo "${{ secrets.QUAYIO_TOKEN }}" | docker login -u="osmirnov+radiopadre_github_ci" --password-stdin $REGISTRY

      - name: Build image
        run: |
          echo github.ref="${{ github.ref }}"
          echo IMAGE_NAME=$IMAGE_NAME
          docker build . --file Dockerfile --tag $IMAGE_NAME

      - name: Push image to docker registry
        run: |
          IMAGE_ID=$IMAGE_NAME

          # Change all uppercase to lowercase
          IMAGE_ID=$(echo $IMAGE_ID | tr '[A-Z]' '[a-z]')

          # Strip git ref prefix from version
          VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')
          RELEASE=""

          echo github.ref="github ref is '${{ github.ref }}'"

          # Strip "v" prefix from tag name
          if [[ "${{ github.ref }}" == "refs/tags/"* ]]; then
            VERSION=$(echo $VERSION | sed -e 's/^v//') 
            RELEASE=$(echo $VERSION | sed -e 's/\.[0-9]*$/.latest/')
            echo "Release $RELEASE"
          elif [[ "${{ github.ref }}" == "refs/heads/b"* ]]; then
            VERSION=$(echo $VERSION | sed -e 's/^b//')
            RELEASE=""
            echo "Branch $VERSION: not release"
            if [ "${VERSION%.x}" != "$VERSION" ]; then
              VERSION="${VERSION%.x}.pre1" 
              echo "Image name will be $VERSION"
            fi
          else
            echo "Branch ${{ github.ref }} is neither branch nor release"
          fi

          # Use Docker `latest` tag convention
          [ "$VERSION" == "master" ] && VERSION=latest

          echo IMAGE_ID=$IMAGE_ID
          echo VERSION=$VERSION

          docker tag $IMAGE_NAME $REGISTRY/$IMAGE_ID:$VERSION
          docker push $REGISTRY/$IMAGE_ID:$VERSION
          if [ "$RELEASE" != "" ]; then
            docker tag $IMAGE_NAME $REGISTRY/$IMAGE_ID:$RELEASE
            docker push $REGISTRY/$IMAGE_ID:$RELEASE
          fi