build-and-push-images.yaml

name: Go Demo -- Build and Push Container Image to GAR

on:
  pull_request:
    types: [labeled, unlabeled, synchronize]
  push:
    branches:
      - main
  workflow_dispatch: {}

env:
  IMAGE_NAME: go-demo
  GAR_LOCATION: us
  GCP_PROJECT_ID: moz-fx-cicd-demos-nonprod
  IMAGE_NAMESPACE: us-docker.pkg.dev/moz-fx-cicd-demos-nonprod/cicd-demos-nonprod

jobs:
  build-and-push:
    if: >
      github.event_name == 'push' ||
      github.event_name == 'workflow_dispatch' ||
      (
        github.event_name == 'pull_request' &&
        contains(github.event.pull_request.labels.*.name, 'preview') &&
        github.event.pull_request.head.repo.full_name == github.repository
      )
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      id-token: write
    steps:
      - uses: actions/checkout@v4
      - uses: docker/setup-buildx-action@v3
      - id: gcp-auth
        name: Google authentication
        uses: google-github-actions/auth@v2
        with:
          token_format: "access_token"
          service_account: artifact-writer@${{ env.GCP_PROJECT_ID }}.iam.gserviceaccount.com
          workload_identity_provider: ${{ vars.GCPV2_GITHUB_WORKLOAD_IDENTITY_PROVIDER }}
      - name: Log in to the GAR container registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.GAR_LOCATION }}-docker.pkg.dev
          username: oauth2accesstoken
          password: ${{ steps.gcp-auth.outputs.access_token }}
      - name: Log in to the GitHub Container registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Run the release script to build version.json file
        working-directory: ./go-demo
        run: ./release.sh
      - name: Build and push image
        uses: docker/build-push-action@v6
        with:
          context: ./go-demo/
          tags: |
            ${{ env.IMAGE_NAMESPACE }}/${{ env.IMAGE_NAME }}:${{ github.event.pull_request.head.sha || github.sha }}
            ${{ env.IMAGE_NAMESPACE }}/${{ env.IMAGE_NAME }}:latest
            ghcr.io/${{ github.repository }}/${{ env.IMAGE_NAME }}:${{ github.event.pull_request.head.sha || github.sha }}
            ghcr.io/${{ github.repository }}/${{ env.IMAGE_NAME }}:latest
          push: true
          cache-from: type=gha
          cache-to: type=gha,mode=max