improve: use alibaba mirror for maven and npmmirror for pnpm

frontend/Dockerfile

@@ -1,24 +1,30 @@
 # =====================================================================
 # 前端镜像：pnpm 构建静态资源 -> Nginx 托管（同时反代 /api 到后端）
 # 构建：docker build -t lab-frontend ./frontend
+#
+# 国内加速：npm/pnpm 使用 npmmirror（淘宝镜像）
+# 如需走官方源：docker build --build-arg NPM_REGISTRY=https://registry.npmjs.org -t lab-frontend ./frontend
 # =====================================================================
 
 # ---------- 构建阶段 ----------
-FROM docker.io/library/node:24-alpine AS build
+FROM node:24-alpine AS build
 WORKDIR /app
 
-# 使用与本地一致的 pnpm 主版本，锁定依赖保证可复现
-RUN npm install -g pnpm@11.3.0
+# 使用 npmmirror 加速 npm 全局安装与依赖拉取
+ARG NPM_REGISTRY=https://registry.npmmirror.com
+RUN npm config set registry "$NPM_REGISTRY" \
+    && npm install -g pnpm@11.3.0 \
+    && pnpm config set registry "$NPM_REGISTRY"
 
 # 先装依赖，充分利用层缓存
 COPY package.json pnpm-lock.yaml pnpm-workspace.yaml ./
-RUN pnpm install --frozen-lockfile
+RUN pnpm install --frozen-lockfile --registry="$NPM_REGISTRY"
 
 COPY . .
 RUN pnpm build
 
 # ---------- 运行阶段 ----------
-FROM docker.io/library/nginx:1.27-alpine
+FROM nginx:1.27-alpine
 
 COPY nginx.conf /etc/nginx/conf.d/default.conf
 COPY --from=build /app/dist /usr/share/nginx/html