diff --git a/mcp-server-demo/Dockerfile b/mcp-server-demo/Dockerfile
index 4fa16db..4da62ee 100644
--- a/mcp-server-demo/Dockerfile
+++ b/mcp-server-demo/Dockerfile
@@ -2,14 +2,20 @@ FROM python:3.12-slim
 
 WORKDIR /app
 
+# 国内服务器访问 Debian / PyPI 官方源易超时，改用阿里云镜像
+RUN sed -i 's|http://deb.debian.org|http://mirrors.aliyun.com|g' /etc/apt/sources.list.d/debian.sources \
+    || sed -i 's|http://deb.debian.org|http://mirrors.aliyun.com|g' /etc/apt/sources.list
+
 RUN apt-get update && apt-get install -y --no-install-recommends \
     && rm -rf /var/lib/apt/lists/*
 
 COPY pyproject.toml ./
 COPY excel_analyzer.py server.py ./
 
-RUN pip install --no-cache-dir --upgrade pip \
-    && pip install --no-cache-dir --timeout 120 --retries 10 .
+ENV PIP_INDEX_URL=https://mirrors.aliyun.com/pypi/simple/
+ENV PIP_TRUSTED_HOST=mirrors.aliyun.com
+
+RUN pip install --no-cache-dir --timeout 300 --retries 10 .
 
 ENV MCP_HOST=0.0.0.0
 ENV MCP_PORT=8010