docker.yml

name: Build and Deploy Docker Image

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

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

    steps:
      - name: Checkout
        uses: actions/checkout@v2

      - name: Install Nix
        uses: cachix/install-nix-action@v22
        with:
          nix_path: nixpkgs=channel:nixos-unstable

      - name: Build Docker Image
        run: | 
          nix build .#container
          docker load < $(nix path-info .#container)

      - name: Log in to GitHub Container Registry
        uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Push Docker image to GitHub Container Registry
        run: |
          IMAGE_ID=ghcr.io/${{ github.repository }}/webserver:latest
          docker tag $(docker images --format "{{.Repository}}:{{.Tag}}" | head -n 1) $IMAGE_ID
          docker push $IMAGE_ID

      - name: Trigger Render Deployment
        run: |
          curl -X POST ${{ secrets.RENDER_DEPLOY_HOOK }}