前端项目初始化，登录页支持暗色主题与禁止滑动

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

frontend/docker/Dockerfile

@@ -0,0 +1,28 @@
+# 生产环境 Dockerfile — 多阶段构建
+# Stage 1: 构建
+FROM node:20-alpine AS builder
+
+WORKDIR /app
+
+COPY package.json package-lock.json* ./
+RUN npm ci
+
+COPY . .
+RUN npm run build
+
+# Stage 2: 运行
+FROM nginx:1.25-alpine
+
+# 复制自定义 Nginx 配置
+COPY docker/nginx.conf /etc/nginx/conf.d/default.conf
+
+# 复制构建产物
+COPY --from=builder /app/dist /usr/share/nginx/html
+
+# 健康检查
+HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
+  CMD wget --quiet --tries=1 --spider http://localhost:80/ || exit 1
+
+EXPOSE 80
+
+CMD ["nginx", "-g", "daemon off;"]