build-public-images-ghcr.yml

name: Build Public Images GHCR

on:
  push:
    tags: ["v*"]

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

env:
  GHCR_REPO: ghcr.io/plausible/community-edition

jobs:
  build:
    strategy:
      fail-fast: false
      matrix:
        include:
          - platform: linux/amd64
            runner: ubuntu-22.04
          - platform: linux/arm64
            runner: ubuntu-22.04-arm

    runs-on: ${{ matrix.runner || 'ubuntu-22.04' }}

    steps:
      - name: Prepare
        run: |
          platform=${{ matrix.platform }}
          echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.GHCR_REPO }}

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Login to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build
        id: docker_build
        uses: docker/build-push-action@v6
        with:
          labels: ${{ steps.meta.outputs.labels }}
          outputs: type=image,name=${{ env.GHCR_REPO }},push-by-digest=true,name-canonical=true,push=true
          cache-from: type=gha
          cache-to: type=gha,mode=max
          build-args: |
            MIX_ENV=ce
            BUILD_METADATA=${{ steps.meta.outputs.json }}
            ERL_FLAGS=+JMsingle true

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

      - name: Export digest
        run: |
          mkdir -p ${{ runner.temp }}/digests
          digest="${{ steps.build.outputs.digest }}"
          touch "${{ runner.temp }}/digests/${digest#sha256:}"

      - name: Upload digest
        uses: actions/upload-artifact@v4
        with:
          name: digests-${{ env.PLATFORM_PAIR }}
          path: ${{ runner.temp }}/digests/*
          if-no-files-found: error
          retention-days: 1

      - name: Notify team on failure
        if: ${{ failure() }}
        uses: fjogeleit/http-request-action@v1
        with:
          url: ${{ secrets.BUILD_NOTIFICATION_URL }}
          method: "POST"
          customHeaders: '{"Content-Type": "application/json"}'
          data: '{"content": "<a href=\"https://github.com/plausible/analytics/actions/workflows/build-public-images.yml\">Build failed</a>"}'

  push:
    runs-on: ubuntu-latest
    needs:
      - build

    steps:
      - name: Download digests
        uses: actions/download-artifact@v4
        with:
          path: ${{ runner.temp }}/digests
          pattern: digests-*
          merge-multiple: true

      - uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - uses: docker/setup-buildx-action@v3

      - uses: docker/metadata-action@v5
        id: meta
        with:
          images: ${{ env.GHCR_REPO }}
          tags: |
            type=semver,pattern={{version}},prefix=v
            type=semver,pattern={{major}}.{{minor}},prefix=v
            type=semver,pattern={{major}},prefix=v

      - name: Create manifest list and push
        working-directory: ${{ runner.temp }}/digests
        run: |
          docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
            $(printf '${{ env.GHCR_REPO }}@sha256:%s ' *)

      - name: Inspect image
        run: |
          docker buildx imagetools inspect ${{ env.GHCR_REPO }}:${{ steps.meta.outputs.version }}