diff --git a/Dockerfile b/Dockerfile
index 0218f34..34d6442 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,6 +10,9 @@ RUN npm run build
 # ===== 阶段2: Python 运行时 =====
 FROM python:3.12-slim AS runtime
 
+# 使用清华镜像源加速（国内服务器）
+RUN sed -i 's/deb.debian.org/mirrors.tencentyun.com/g' /etc/apt/sources.list.d/debian.sources
+
 # 安装 OpenCV 系统依赖
 RUN apt-get update && apt-get install -y --no-install-recommends \
     libgl1 \