docker-pr.yaml

name: Build Docker PR preview image

on:
  workflow_dispatch:
    inputs:
      pr:
        description: PR number
        required: true

jobs:
  build:
    name: Build and publish
    runs-on: ubuntu-latest

    permissions:
      contents: read
      packages: write

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

      - name: Checkout PR
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          gh pr checkout ${{ inputs.pr }}

      - name: Log in to the container registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

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

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

      - name: Build and publish
        uses: docker/build-push-action@v6
        with:
          context: .
          push: true
          platforms: linux/amd64,linux/arm64
          tags: ghcr.io/alexgustafsson/cupdate:pr-${{ inputs.pr }}