build.yml

# Automatically build container images for every push to master,
# and also every version tag in the form X.X.X[.*].
# Built images are pushed to both docker.io and ghcr.io

name: Build

on:
  push:
    branches: [ master ]
    tags:
      - "[0-9]+.[0-9]+.[0-9]+*"

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Get git tag
        id: git_info
        if: startsWith(github.ref, 'refs/tags/')
        run: echo "::set-output name=tag::${GITHUB_REF##*/}"
      - name: Determine image tags
        id: determine
        env:
          git_tag: ${{ steps.git_info.outputs.tag }}
        run: |
          repo="${GITHUB_REPOSITORY,,}"  # to lower case
          tag="${git_tag:-latest}"  # if build triggered by tag, use tag name
          echo "::set-output name=repo::$repo"
          echo "::set-output name=tag::$tag"
          echo "::set-output name=dock_image::$repo:$tag"

      - uses: docker/setup-qemu-action@v1
      - uses: docker/setup-buildx-action@v1
        id: buildx
      - name: Cache Docker layers
        uses: actions/cache@v2
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-buildx-

      - name: Login to DockerHub
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_PASSWORD }}

      - name: Login to GitHub Container Registry
        uses: docker/login-action@v1
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Build and push
        uses: docker/build-push-action@v2
        with:
          push: true
          tags: |
           ${{ steps.determine.outputs.dock_image }}
           ghcr.io/${{ steps.determine.outputs.dock_image }}
          platforms: linux/amd64,linux/ppc64le,linux/arm64,linux/arm/v7
          cache-from: type=local,src=/tmp/.buildx-cache
          cache-to: type=local,dest=/tmp/.buildx-cache
  PushContainerReadme:
    runs-on: ubuntu-latest
    name: Push README to Docker Hub
    steps:
      - name: git checkout
        uses: actions/checkout@v2
      - name: push README to Dockerhub
        uses: christian-korneck/update-container-description-action@v1
        env:
          DOCKER_USER: ${{ secrets.DOCKERHUB_USERNAME }}
          DOCKER_PASS: ${{ secrets.DOCKERHUB_PASSWORD }}
        with:
          destination_container_repo: fnndsc/pfbridge
          provider: dockerhub
          short_description: 'A bridge between clinical services and pflink'
          readme_file: 'README.md'