# Copy this file to <monorepo>/.github/workflows/ and adjust paths as needed
# For monorepo: change context and paths to match your app location

name: Docker Build & Push

on:
  push:
    branches: [ main ]
    tags: [ 'v*' ]
    # For monorepo, uncomment and adjust:
    # paths:
    #   - 'apps/your-grpc-app/**'
  pull_request:
    branches: [ main ]
    # For monorepo, uncomment and adjust:
    # paths:
    #   - 'apps/your-grpc-app/**'

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}/grpc-gateway-app

jobs:
  build:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      
    steps:
    - name: Checkout
      uses: actions/checkout@v4
    
    - name: Set up Docker Buildx
      uses: docker/setup-buildx-action@v3
    
    - name: Log in to Container Registry
      if: github.event_name != 'pull_request'
      uses: docker/login-action@v3
      with:
        registry: ${{ env.REGISTRY }}
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}
    
    - name: Extract metadata
      id: meta
      uses: docker/metadata-action@v5
      with:
        images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
        tags: |
          type=ref,event=branch
          type=ref,event=pr
          type=semver,pattern={{version}}
          type=semver,pattern={{major}}.{{minor}}
          type=sha
    
    - name: Build and push Docker image
      uses: docker/build-push-action@v5
      with:
        # For monorepo, adjust context:
        # context: ./apps/your-grpc-app
        context: .
        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