ghcr-publish.yml

name: Build and Push Docker Image

on:
  push:
    branches:
      - main

jobs:
  build:
    strategy:
      matrix:
        arch: [amd64, arm64]
        include:
          - arch: amd64
            runs-on: ubuntu-24.04
            platform: linux/amd64
            tag: amd64
          - arch: arm64
            runs-on: ubuntu-24.04-arm
            platform: linux/arm64
            tag: arm64

    runs-on: ${{ matrix.runs-on }}

    steps:
      - name: Checkout code
        uses: actions/checkout@v3

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2

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

      - name: Build and push Docker image for ${{ matrix.arch }}
        uses: docker/build-push-action@v4
        with:
          context: .
          file: ./Containerfile
          platforms: ${{ matrix.platform }}
          push: true
          tags: ghcr.io/skyblaster/caddy:${{ matrix.tag }}

  push_manifest:
    needs: build
    runs-on: ubuntu-latest
    steps:
      - name: Login to GitHub Container Registry
        uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Create and push manifest
        run: |
          docker manifest create ghcr.io/skyblaster/caddy:latest \
            ghcr.io/skyblaster/caddy:amd64 \
            ghcr.io/skyblaster/caddy:arm64

          docker manifest push ghcr.io/skyblaster/caddy:latest