name: Docker Image CI

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

jobs:
  build:
    runs-on: ubuntu-latest

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

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2

      - name: Log in to DockerHub
        if: github.event_name == 'push'
        uses: docker/login-action@v2
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Build the Docker image
        id: build-image
        run: |
          IMAGE_TAG=my-image-name:${{ github.sha }}
          docker build . --file Dockerfile --tag $IMAGE_TAG
          echo "IMAGE_TAG=$IMAGE_TAG" >> $GITHUB_ENV

      # Uncomment below to push the image to Docker Hub (or another registry)
      #- name: Push the Docker image
      #  run: docker push ${{ env.IMAGE_TAG }}