automated_release.yml

name: Build, test and release

on:
  push:
    branches:
      - develop
      - master

env:
  IMAGE_NAME: ${{ github.repository }}/${{ github.event.repository.name }}

jobs:
  build_test_and_release:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2

      - uses: nelonoel/branch-name@v1.0.1

      - name: Build and tag the image for testing and release
        run: >-
          docker build .
          --file Dockerfile
          --tag docker.pkg.github.com/${IMAGE_NAME}:${BRANCH_NAME}

      - name: Run tests against the image
        run: >-
          docker run
          --network host
          docker.pkg.github.com/${IMAGE_NAME}:${BRANCH_NAME}
          npm test

      - name: Set release name
        # https://docs.github.com/en/actions/reference/workflow-commands-for-github-actions#setting-an-environment-variable
        # On the develop branch this might create RELEASE_NAME=2.4.6-987654321-develop
        # On the master branch this would then only create RELEASE_NAME=2.4.6
        run: echo "RELEASE_NAME=$(printf -- '%s%s\n' $(cat .release-version) $([ ${BRANCH_NAME} = "develop" ] && printf -- '-%s-develop' ${GITHUB_RUN_ID} || echo ""))" >> $GITHUB_ENV

      - name: Set release tag
        run: echo "RELEASE_TAG=v$RELEASE_NAME" >> $GITHUB_ENV

      - name: Create release
        uses: ncipollo/release-action@v1.8.8
        with:
          name: ${{ env.RELEASE_NAME }}
          tag: ${{ env.RELEASE_TAG }}
          prerelease: ${{ !(github.ref == 'refs/heads/master') }}
          commit: ${{ github.sha }}

      - name: Login to registry
        run: >-
          docker login
          -u ${{ github.actor }}
          -p ${{ secrets.GITHUB_TOKEN }}
          docker.pkg.github.com

      - name: Tag image with release version
        run: >-
          docker tag
          docker.pkg.github.com/${IMAGE_NAME}:${BRANCH_NAME}
          docker.pkg.github.com/${IMAGE_NAME}:${{ env.RELEASE_TAG }}

      - name: Push release tag image to registry
        run: >-
          docker push docker.pkg.github.com/${IMAGE_NAME}:${{ env.RELEASE_TAG }}

      - name: Remove the oldest package
        # The delete-package-versions action has become broken and the fix doesn't look imminent.
        # Re-enable this later if a fix comes out! https://github.com/actions/delete-package-versions/issues/28
        if: false
        uses: actions/delete-package-versions@v1
        with:
          package-name: '${{ github.event.repository.name }}'