name: Build Docker Image

on:
  push:
    branches: [main]
    paths:
      - 'docker/Dockerfile'
  workflow_dispatch:

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ghcr.io/sulfurnitride/fluorine-builder

jobs:
  build-image:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write

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

      - name: Log in to GHCR
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Build and push
        uses: docker/build-push-action@v6
        with:
          context: docker
          file: docker/Dockerfile
          push: true
          tags: |
            ${{ env.IMAGE_NAME }}:latest
            ${{ env.IMAGE_NAME }}:${{ github.sha }}
          cache-from: type=registry,ref=${{ env.IMAGE_NAME }}:buildcache
          cache-to: type=registry,ref=${{ env.IMAGE_NAME }}:buildcache,mode=max