docker-image.yml

name: Docker Compose Actions Workflow

on:
  push:
    branches: [ "main" ]
  pull_request:
    branches: [ "main" ]

env:
  # Use docker.io for Docker Hub if empty
  REGISTRY: docker.io
  # github.repository as <account>/<repo>
  IMAGE_NAME: ${{ github.repository }}

jobs:

  build:

    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v4
    - name: Build the Docker image
      run: |
          cp .env.example .env
          docker compose build --no-cache --force-rm 
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Test the Docker image
        run: |
          cp .env.example .env
          docker compose up -d 
  push_to_registry:
    name: Push Docker image to Docker Hub
    runs-on: ubuntu-latest
    steps:
      - name: Check out the repo
        uses: actions/checkout@v4

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
      
      - name: Log in to Docker Hub
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}
      
      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
      
      - name: Cache Docker layers
        id: cache
        uses: actions/cache@v4
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ github.sha }}
          restore-keys: |
              ${{ runner.os }}-buildx-

      - name: Build and push Docker image
        if : github.event_name != 'pull_request'
        uses: docker/build-push-action@v6
        with:
          context: "{{defaultContext}}"
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=local,src=/tmp/.buildx-cache
          cache-to: type=local,dest=/tmp/.buildx-cache

      - name: image digest
        run: echo ${{ steps.build-and-push.outputs.digest }}
      - name: image digest
        run: echo ${{ steps.build-and-push.outputs.digest }}