release.yml

name: Stable release

on:
  release:
    types:
      - published
env:
  # Registry variables
  HUB_BASE: ckan
  GIT_BASE: ghcr.io/ckan

jobs:
  versioning:
    runs-on: ubuntu-latest

    outputs:
      version: ${{ steps.set.outputs.version }}
    steps:
      - name: Getting API Version
        id: get
        uses: actions/github-script@v4
        with:
          result-encoding: string
          script: |
            return context.payload.release.tag_name.substring(0,2)
      - name: Setting API Version
        id: set
        run: echo "::set-output name=version::${{ steps.get.outputs.result }}"

  build:
    needs: ['versioning']
    runs-on: ubuntu-latest

    steps:
      - name: Inject slug/short variables
        uses: rlespinasse/github-slug-action@v3.x

      - name: Download Repository
        uses: actions/checkout@v2

      # Build the Docker image and push it
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1

      - name: Cache Docker layers
        uses: actions/cache@v2
        with:
          path: |
            /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ env.GITHUB_HEAD_REF_SLUG || env.GITHUB_REF_SLUG }}-${{ env.GITHUB_SHA_SHORT }}

      - name: Login to Docker Hub
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Login to GitHub Container Registry
        uses: docker/login-action@v1
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push
        id: docker_build
        uses: docker/build-push-action@v2
        with:
          context: .
          target: main
          tags: |
            ${{ env.GIT_BASE }}/${{ env.GITHUB_REPOSITORY_NAME_PART_SLUG }}:${{ needs.versioning.outputs.version }}
            ${{ env.GIT_BASE }}/${{ env.GITHUB_REPOSITORY_NAME_PART_SLUG }}:latest
            ${{ env.HUB_BASE }}/${{ env.GITHUB_REPOSITORY_NAME_PART_SLUG }}:${{ needs.versioning.outputs.version }}
            ${{ env.HUB_BASE }}/${{ env.GITHUB_REPOSITORY_NAME_PART_SLUG }}:latest
          push: true
          cache-from: type=registry,ref=${{ env.GIT_BASE }}/${{ env.GITHUB_REPOSITORY_NAME_PART_SLUG }}:latest
          cache-to: type=inline

      - name: Image digest
        run: echo ${{ steps.docker_build.outputs.digest }}