docker-compose.yml

name: Multi-Arch Parallel Build

on:
  push:
    branches: [ "main" ]
  workflow_dispatch:

env:
  REGISTRY: ghcr.io
  

jobs:
  # 步骤 A：准备工作，强行转小写
  prepare:
    runs-on: ubuntu-latest
    outputs:
      image_name: ${{ steps.lower.outputs.image_name }}
    steps:
      - id: lower
        run: echo "image_name=$(echo ${{ github.repository }} | tr '[:upper:]' '[:lower:]')" >> $GITHUB_OUTPUT

  # 步骤 B：并行构建（amd64 和 arm64 同时跑）
  build:
    needs: prepare
    runs-on: ubuntu-latest
    strategy:
      matrix:
        arch: [amd64, arm64]
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set up QEMU
        if: matrix.arch == 'arm64'
        uses: docker/setup-qemu-action@v3

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

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

      - name: Build and Push per Arch
        uses: docker/build-push-action@v5
        with:
          context: .
          push: true
          platforms: linux/${{ matrix.arch }}
          # 推送时带上架构后缀，比如 :amd64 或 :arm64
          tags: ${{ env.REGISTRY }}/${{ needs.prepare.outputs.image_name }}:${{ matrix.arch }}
          cache-from: type=gha,scope=build-${{ matrix.arch }}
          cache-to: type=gha,mode=max,scope=build-${{ matrix.arch }}

  # 步骤 C：合并 Manifest（生成最终的 latest 标签）
  manifest:
    needs: [prepare, build]
    runs-on: ubuntu-latest
    steps:
      - name: Login to GHCR
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Create and Push Multi-arch Manifest
        run: |
          FULL_IMG="${{ env.REGISTRY }}/${{ needs.prepare.outputs.image_name }}"
          docker buildx imagetools create -t ${FULL_IMG}:latest \
            ${FULL_IMG}:amd64 \
            ${FULL_IMG}:arm64