release.yaml

name: Publish Action and Container

on:
  push:
    branches:
      - main

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build:
    runs-on: ubuntu-latest
    permissions:
      # Write required to create a release
      contents: write
      # Write required to publish container to GHCR
      packages: write
      # Create attestations for published container
      attestations: write
      id-token: write
    steps:
      - name: Checkout repository
        uses: actions/checkout@v2

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1

      # Extract the @guardian/cdk version from the package.json to create a release
      # matching the version.
      - run: echo "CDK_VERSION=$(jq -rc .dependencies.\"@guardian/cdk\" < package.json)" >> $GITHUB_ENV

      # Abort if release exists already
      - name: Check if release exists
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          if gh release view v${{ env.CDK_VERSION }}; then
            echo "Release v${{ env.CDK_VERSION }} already exists"
            exit 1
          fi

      - name: Create draft release
        env:
          GH_TOKEN: ${{ github.token }}
        run: gh release create v${{ env.CDK_VERSION }} --draft --generate-notes

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=semver,pattern={{version}},value=${{ env.CDK_VERSION}}
            type=semver,pattern={{major}}.{{minor}},value=${{ env.CDK_VERSION}}
            type=semver,pattern={{major}},value=${{ env.CDK_VERSION}}

      - name: Log in to the Container registry
        uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push Docker image
        id: push
        uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
        with:
          context: ./container
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}

      - name: Generate artifact attestation
        uses: actions/attest-build-provenance@v1
        with:
          subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME}}
          subject-digest: ${{ steps.push.outputs.digest }}
          push-to-registry: true

      - name: Publish draft release
        env:
          GH_TOKEN: ${{ github.token }}
        run: gh release edit v${{ env.CDK_VERSION }} --draft=false