# GitHub Actions - 自动构建并推送 Docker 镜像
# 触发条件：推送到 main 分支 或 创建 tag
name: Build and Push Docker Image
on:
push:
branches:
- main
- master
tags:
- 'v*' # 推送 v1.0.0 这样的 tag 时触发
pull_request:
branches:
- main
- master
env:
# Docker 镜像名称（改成你的用户名/仓库名）
IMAGE_NAME: mcp-server
jobs:
build:
runs-on: ubuntu-latest
# 添加权限：允许推送到 GHCR
permissions:
contents: read
packages: write
steps:
# 1. 检出代码
- name: Checkout code
uses: actions/checkout@v4
# 2. 设置 Docker Buildx（支持多平台构建）
- name: Set up Docker Buildx
uses: docker/setup-buildx-action@v3
# 3. 登录到 GitHub Container Registry
- name: Login to GitHub Container Registry
if: github.event_name != 'pull_request'
uses: docker/login-action@v3
with:
registry: ghcr.io
username: ${{ github.actor }}
password: ${{ secrets.GITHUB_TOKEN }}
# 4. 提取元数据（标签、版本号等）
- name: Extract metadata
id: meta
uses: docker/metadata-action@v5
with:
images: ghcr.io/${{ github.repository_owner }}/${{ env.IMAGE_NAME }}
tags: |
# 分支名作为标签（main -> latest）
type=ref,event=branch
# tag 作为版本号（v1.0.0 -> 1.0.0）
type=semver,pattern={{version}}
type=semver,pattern={{major}}.{{minor}}
# 短 commit hash
type=sha,prefix=
# 5. 构建并推送镜像
- name: Build and push
uses: docker/build-push-action@v5
with:
context: .
push: ${{ github.event_name != 'pull_request' }}
tags: ${{ steps.meta.outputs.tags }}
labels: ${{ steps.meta.outputs.labels }}
# 缓存加速构建
cache-from: type=gha
cache-to: type=gha,mode=max
# 多平台支持（可选，去掉注释启用）
# platforms: linux/amd64,linux/arm64
# 6. 输出镜像信息
- name: Image info
if: github.event_name != 'pull_request'
run: |
echo "🎉 镜像已推送到 GitHub Container Registry"
echo "📦 镜像地址: ghcr.io/${{ github.repository_owner }}/${{ env.IMAGE_NAME }}"
echo "🏷️ 标签: ${{ steps.meta.outputs.tags }}"
