fix: 修改前端生产构建方案

docker/frontend-service.Dockerfile

@@ -1,12 +1,39 @@
-FROM node:20
-
-RUN apt-get update \
-    && apt-get install -y --no-install-recommends rsync \
-    && rm -rf /var/lib/apt/lists/*
-
+# ==== builder ====
+FROM node:20-bullseye AS builder
 WORKDIR /app
 
-COPY docker/frontend-service-entrypoint.sh /usr/local/bin/frontend-service-entrypoint.sh
-RUN chmod +x /usr/local/bin/frontend-service-entrypoint.sh
+# 通过构建参数选择环境：staging / production（默认 staging）
+ARG NUXT_ENV=staging
+ENV NODE_ENV=production \
+    NUXT_TELEMETRY_DISABLED=1
 
-CMD ["frontend-service-entrypoint.sh"]
+# 复制源代码（假设仓库根目录包含 frontend_nuxt）
+# 构建上下文由 docker-compose 指向仓库根目录
+COPY ./frontend_nuxt/package*.json /app/
+RUN npm ci
+
+# 拷贝剩余代码
+COPY ./frontend_nuxt/ /app/
+
+# 若存在环境样例文件，则在构建期复制为 .env（你也可以用 --build-arg 覆盖）
+RUN if [ -f ".env.${NUXT_ENV}.example" ]; then cp ".env.${NUXT_ENV}.example" .env; fi
+
+# 构建 SSR：产物在 .output
+RUN npm run build
+
+# ==== runner ====
+FROM node:20-alpine AS runner
+WORKDIR /app
+ENV NODE_ENV=production \
+    NUXT_TELEMETRY_DISABLED=1 \
+    PORT=3000 \
+    HOST=0.0.0.0
+
+# 复制构建产物
+COPY --from=builder /app/.output /app/.output
+
+# 健康检查（简洁起见，探测首页）
+HEALTHCHECK --interval=10s --timeout=5s --retries=30 CMD wget -qO- http://127.0.0.1:${PORT}/ >/dev/null 2>&1 || exit 1
+
+EXPOSE 3000
+CMD ["node", ".output/server/index.mjs"]