build-backend.yml

name: Backend Build

on:
  pull_request:
    types: [opened, edited]
    paths: ["backend/**"]

env:
  DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}

jobs:
  build:
    runs-on: ubuntu-latest
    if: github.event.pull_request.base.ref == 'dev'
    defaults:
      run:
        working-directory: ./backend

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

      - name: Generate .env file
        run: echo "DOCKER_USERNAME=${{ secrets.DOCKER_USERNAME }}" >> .env

      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_ACCESS_TOKEN }}

      - name: Setup docker-compose
        uses: KengoTODA/actions-setup-docker-compose@v1.2.1
        with:
          version: "2.24.5"

      - name: Create a Builder Instance
        run: |
          docker buildx create --name buildx
          docker buildx use buildx

      - name: Build & Push Docker Cache
        run: |
          docker-compose -f compose.cache-export.yml build --builder buildx --build-arg BUILDKIT_INLINE_CACHE=1
          docker-compose -f compose.cache-export.yml push