diff --git a/Dockerfile b/Dockerfile
index 5aa1a18..b38644c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -34,7 +34,10 @@ RUN if [ -f package.json ]; then npm ci --omit=dev; fi
 FROM docker.1ms.run/nginx:1.27-alpine
 
 # 安装 Node.js（给后端运行）
-RUN apk add --no-cache nodejs npm bash
+# 更换为国内源（清华或阿里云）
+RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g' /etc/apk/repositories \
+    && apk update \
+    && apk add --no-cache nodejs npm bash
 
 WORKDIR /app