github-ci.yml

name: Substrate publisher image build and release automation workflow

on:
  push:
    tags:
      - '*'
    branches:
      - main
env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build-and-push-publisher:
    runs-on: ubuntu-latest

    permissions:
      contents: read
      packages: write

    steps:
    - name: Check out the repo
      uses: actions/checkout@v4

    - name: Log in to the Container registry
      uses: docker/login-action@v3
      with:
        registry: ${{ env.REGISTRY }}
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}

    - name: Extract metadata (tags, labels) for Docker
      id: meta
      uses: docker/metadata-action@v5
      with:
        images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
        # Set the list of tags for the Docker image
        tags: |
          type=ref,event=tag
          type=raw,value=latest

    - name: Build and push Docker image
      uses: docker/build-push-action@v5
      with:
        context: ./
        file: ./docker/Dockerfile
        # No need for build args at the build time, will be set at the runtime
        # build_args: |
        #   NATS=${{ vars.NATS }}
        push: true
        tags: ${{ steps.meta.outputs.tags }}
        labels: ${{ steps.meta.outputs.labels }}

  create-release:
    if: github.event_name == 'push' && contains(github.ref, 'refs/tags/')
    runs-on: ubuntu-latest
    needs: build-and-push-publisher
    steps:
    - name: Check out the repo
      uses: actions/checkout@v4
      with:
        fetch-depth: 0

    - name: Create package.json with latest tag
      run: |
        latest_tag=$(git describe --tags `git rev-list --tags --max-count=1`)
        previous_tag=$(git describe --tags --abbrev=0 HEAD^)
        echo "Latest tag is $latest_tag"
        echo "Previous tag is $previous_tag"
        echo "{\"version\": \"${latest_tag#v}\"}" > package.json
        echo "LATEST_TAG=${latest_tag}" >> $GITHUB_ENV
        echo "PREVIOUS_TAG=${previous_tag}" >> $GITHUB_ENV

    - name: "Generate release changelog"
      id: changelog
      uses: heinrichreimer/action-github-changelog-generator@v2.3
      with:
        token: ${{ secrets.GITHUB_TOKEN }}
        unreleased: false
        onlyLastTag: true
        # sinceTag: ${{ env.PREVIOUS_TAG }}
        dueTag: ${{ env.LATEST_TAG }}
        output: "CHANGELOG.md"
        dateFormat: "%Y-%m-%d"

    - name: Tidy up the changelog
      run: sed -i '$ d' CHANGELOG.md

    - name: Print the changelog
      run: cat CHANGELOG.md

    - name: Release
      uses: softprops/action-gh-release@v2
      with:
        token: ${{ secrets.GITHUB_TOKEN }}
        tag_name: ${{ env.LATEST_TAG }}
        body_path: CHANGELOG.md
        draft: false
        prerelease: false
        files: |
          CHANGELOG.md