Add pre-compiled deployment support (Dockerfile.fast) and optimized build process

Dockerfile.fast

@@ -0,0 +1,28 @@
+# 预编译生产镜像
+# 使用此镜像前请先在本地运行: npm install && npm run build
+
+FROM node:20-slim
+
+WORKDIR /app
+
+# 设置镜像源提高安装速度
+RUN npm config set registry https://registry.npmmirror.com
+
+# 只拷贝生产依赖和编译好的产物
+COPY package*.json ./
+RUN apt-get update && apt-get install -y python3 make g++ \
+    && npm install --omit=dev \
+    && apt-get purge -y python3 make g++ \
+    && apt-get autoremove -y \
+    && rm -rf /var/lib/apt/lists/*
+
+# 拷贝本地编译好的 build 和 static 目录
+COPY build ./build
+COPY static ./static
+
+ENV PORT=1995
+ENV NODE_ENV=production
+
+EXPOSE 1995
+
+CMD ["node", "build"]