build-and-publish.yml

name: Docker

# This workflow uses actions that are not certified by GitHub.
# They are provided by a third-party and are governed by
# separate terms of service, privacy policy, and support
# documentation.

on:
  schedule:
    - cron: '18 2 * * *'
  push:
    branches: [ "main" ]
  pull_request:
    branches: [ "main" ]

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: dbsystel/postgresql-partman


jobs:
  build:
    strategy:
      matrix:
        postgres_version: [13, 14, 15, 16]
        major: [4,5]
        include:
          - partman_version: v4.7.4
            partman_checksum: 28e4fdb83ecc16525959ae9593bfbfd077db429285f5f7d8e2468bfff6cbdbf2c81ace79a9ddeb4f00f51eb709163dbd713fe6b221a432ac2ff766f98d4cf8e4
            default: "true"
            major: 4
          - partman_version: v5.0.0
            partman_checksum: 7a1b41732eb063a94cee7a589a252055e3a33ccf0ddfe5cddba22978ffd306cf263312b172355c930d355aea0f5f5530fd2344520791df9cb05a38614c521f9f
            default: "false"
            major: 5
        exclude:
          - major: 5
            postgres_version: 13 # partman 5.x does not support postgres 13
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      # This is used to complete the identity challenge
      # with sigstore/fulcio when running outside of PRs.
      id-token: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      # Install the cosign tool except on PR
      # https://github.com/sigstore/cosign-installer
      - name: Install cosign
        if: github.event_name != 'pull_request'
        uses: sigstore/cosign-installer@v3.4.0

      # Workaround: https://github.com/docker/build-push-action/issues/461
      - name: Setup Docker buildx
        uses: docker/setup-buildx-action@v3

      # Login against a Docker registry except on PR
      # https://github.com/docker/login-action
      - name: Log into registry ${{ env.REGISTRY }}
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      # Extract metadata (tags, labels) for Docker
      # https://github.com/docker/metadata-action
      - name: Extract Docker metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=raw,value=latest,enable=${{ matrix.postgres_version == '15' && matrix.default == 'true' }}
            type=raw,value=${{ matrix.postgres_version }},enable=${{ matrix.default == 'true'}}
            ${{ matrix.postgres_version }}-${{ matrix.major }}

      # Build and push Docker image with Buildx (don't push on PR)
      # https://github.com/docker/build-push-action
      - name: Build and push Docker image
        id: build-and-push
        uses: docker/build-push-action@v5
        with:
          context: .
          build-args: |
            POSTGRESQL_VERSION=${{ matrix.postgres_version }}
            PARTMAN_VERSION=${{ matrix.partman_version }}
            PARTMAN_CHECKSUM=${{ matrix.partman_checksum }}
          platforms: linux/amd64,linux/arm64
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max


      # Sign the resulting Docker image digest except on PRs.
      # This will only write to the public Rekor transparency log when the Docker
      # repository is public to avoid leaking data.  If you would like to publish
      # transparency data ev en for private images, pass --force to cosign below.
      # https://github.com/sigstore/cosign
      - name: Sign the published Docker image
        if: ${{ github.event_name != 'pull_request' }}
        env:
          COSIGN_EXPERIMENTAL: "true"
        # This step uses the identity token to provision an ephemeral certificate
        # against the sigstore community Fulcio instance.
        run: echo "${{ steps.meta.outputs.tags }}" | xargs -I {} cosign sign -y {}@${{ steps.build-and-push.outputs.digest }}