name: Docker image builds (pull requests)

on:
  pull_request:
    branches: [ "main" ]

env:
  DOCKER_METADATA_SET_OUTPUT_ENV: "true"

permissions:
  contents: read

jobs:
  build:
    runs-on: ubuntu-24.04
    steps:
      - name: Checkout code
        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
        with:
          fetch-tags: true
          fetch-depth: 0
          persist-credentials: false

      - name: Set up Homebrew
        uses: Homebrew/actions/setup-homebrew@main

      - name: Setup Homebrew cellar cache
        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
        with:
          path: |
            /home/linuxbrew/.linuxbrew/Cellar
            /home/linuxbrew/.linuxbrew/bin
            /home/linuxbrew/.linuxbrew/etc
            /home/linuxbrew/.linuxbrew/include
            /home/linuxbrew/.linuxbrew/lib
            /home/linuxbrew/.linuxbrew/opt
            /home/linuxbrew/.linuxbrew/sbin
            /home/linuxbrew/.linuxbrew/share
            /home/linuxbrew/.linuxbrew/var
          key: ${{ runner.os }}-go-homebrew-cellar-${{ hashFiles('go.sum') }}
          restore-keys: |
            ${{ runner.os }}-go-homebrew-cellar-

      - name: Install Brew dependencies
        run: |
          brew bundle

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@c1e51972afc2121e065aed6d45c65596fe445f3f # v5.8.0
        with:
          images: ghcr.io/${{ github.repository }}

      - name: Build and push
        id: build
        run: |
          npm ci
          npm run container
        env:
          PULL_REQUEST_ID: ${{ github.event.number }}
          DOCKER_REPO: ghcr.io/${{ github.repository }}
          SLOG_LEVEL: debug

      - run: |
          echo "Test this with:"
          echo "docker pull ${DOCKER_IMAGE}"
        env:
          DOCKER_IMAGE: ${{ steps.build.outputs.docker_image }}