TrafficAnalytics/.github/workflows/deploy-image-to-gcp.yml at main · TryGhost/TrafficAnalytics · GitHub

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name: Build & Push Docker Image (GCP)

on:
  workflow_call:
    outputs:
      image:
        description: "The Docker image with SHA tag"
        value: ${{ jobs.run.outputs.image }}
      version:
        description: "The Docker image version tag"
        value: ${{ jobs.run.outputs.version }}

permissions:
  id-token: write

jobs:
  run:
    name: Run
    runs-on: ubuntu-latest
    outputs:
      image: ${{ vars.DOCKER_IMAGE }}:sha-${{ github.sha }}
      version: ${{ steps.traffic-analytics-docker-metadata.outputs.version }}
    steps:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
        with:
          fetch-tags: true

      - name: Get tree SHA
        id: tree
        run: echo "sha=$(git rev-parse HEAD^{tree})" >> $GITHUB_OUTPUT

      - name: Output tree SHA
        run: |
          echo "Tree SHA: ${{ steps.tree.outputs.sha }}"

      - name: Pull already built docker image
        id: pull-cache
        env:
          IMAGE_NAME: ghcr.io/${{ github.repository }}:tree-${{ steps.tree.outputs.sha }}
        run: |
          IMAGE_NAME_LOWER=$(echo "$IMAGE_NAME" | tr '[:upper:]' '[:lower:]')
          if docker pull "$IMAGE_NAME_LOWER"; then
            echo "cache-hit=true" >> $GITHUB_OUTPUT
            echo "cached-image=$IMAGE_NAME_LOWER" >> $GITHUB_OUTPUT
          else
            echo "cache-hit=false" >> $GITHUB_OUTPUT
            echo "Image not found, proceeding to build."
          fi

      - name: Extract node version
        id: extract-node-version
        if: steps.pull-cache.outputs.cache-hit != 'true'
        uses: ./.github/actions/extract-node-version

      - name: Build Docker Image
        id: docker-build
        if: steps.pull-cache.outputs.cache-hit != 'true'
        uses: ./.github/actions/docker-build
        with:
          node-version: ${{ fromJSON(steps.extract-node-version.outputs.node-version) }}

      - name: Lint & Test
        if: steps.pull-cache.outputs.cache-hit != 'true'
        uses: ./.github/actions/lint-and-test
        with:
          docker-image: ${{ steps.docker-build.outputs.base-image-name }}

      - name: "Auth with Google Cloud"
        id: gcp-auth
        uses: google-github-actions/auth@7c6bc770dae815cd3e89ee6cdf493a5fab2cc093 # v3
        with:
          project_id: ${{ vars.GCP_PROJECT_ID }}
          token_format: access_token
          workload_identity_provider: ${{ vars.GCP_WORKFLOW_IDENTITY_PROVIDER }}
          service_account: gh-artifact-manager@ghost-traffic-analytics.iam.gserviceaccount.com

      - name: "Login to GCP Artifact Registry"
        uses: docker/login-action@4907a6ddec9925e35a0a9e82d7399ccc52663121 # v4
        with:
          registry: europe-docker.pkg.dev
          username: oauth2accesstoken
          password: ${{ steps.gcp-auth.outputs.access_token }}

      - name: Get Version Tag
        id: get-version-tag
        run: |
          TAG=$(git tag --points-at HEAD | grep -E '^v[0-9.]+' | sort -r | head -n 1)
          echo "version-tag=$TAG" >> $GITHUB_OUTPUT

      - name: Generate Docker Tags
        id: traffic-analytics-docker-metadata
        uses: docker/metadata-action@030e881283bb7a6894de51c315a6bfe6a94e05cf # v6
        with:
          images: |
            ${{ vars.DOCKER_IMAGE }}
          tags: |
            ${{ github.ref == 'refs/heads/main' && 'type=edge,branch=main' || '' }}
            type=semver,pattern={{version}},value=${{ steps.get-version-tag.outputs.version-tag }}
            type=semver,pattern={{major}}.{{minor}},value=${{ steps.get-version-tag.outputs.version-tag }}
            type=semver,pattern={{major}},value=${{ steps.get-version-tag.outputs.version-tag }}
            type=sha,priority=1100
            type=sha,format=long

      - name: Retag & Push Docker Image
        env:
          SOURCE_IMAGE: ${{ steps.pull-cache.outputs.cache-hit == 'true' && steps.pull-cache.outputs.cached-image || steps.docker-build.outputs.production-image-name }}
        run: |
          for tag in $(echo "${{ steps.traffic-analytics-docker-metadata.outputs.tags }}"); do
            echo "Tagging: $tag"
            docker tag $SOURCE_IMAGE $tag
          done

          for tag in $(echo "${{ steps.traffic-analytics-docker-metadata.outputs.tags }}"); do
            echo "Pushing: $tag"
            docker push $tag
          done