name: Build the Docker Image

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

jobs:

  build:

    runs-on: docker

    steps:
    - uses: actions/checkout@v4
    - name: Log in to Docker Hub
      run: echo "${{ secrets.DOCKER_PASSWORD }}" | docker login -u "${{ secrets.DOCKER_USERNAME }}" --password-stdin
    
    - name: Generate timestamp
      run: echo "TIMESTAMP=$(date +%s)" >> $GITHUB_ENV

    - name: Build the Docker image
      run: docker build . --file Dockerfile --tag "${{ secrets.DOCKER_USERNAME }}"/jekyll-blog:${TIMESTAMP} --tag "${{ secrets.DOCKER_USERNAME }}"/jekyll-blog:latest 

    - name: Push the Docker image
      run: docker push -a "${{ secrets.DOCKER_USERNAME }}"/jekyll-blog