diff --git a/Dockerfile b/Dockerfile
index 1bed054..54d79c2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,8 +3,9 @@ FROM alpine:3.11
 MAINTAINER Endial Fang ( endial@126.com )
 
 RUN echo "http://mirrors.ustc.edu.cn/alpine/v3.11/main" > /etc/apk/repositories \
-  && echo "http://mirrors.ustc.edu.cn/alpine/v3.11/community" >> /etc/apk/repositories \
-  && echo "http://dl-cdn.alpinelinux.org/alpine/v3.11/main" >> /etc/apk/repositories \
-  && echo "http://dl-cdn.alpinelinux.org/alpine/v3.11/community" >> /etc/apk/repositories
+  && echo "http://mirrors.ustc.edu.cn/alpine/v3.11/community" >> /etc/apk/repositories
+
+# RUN echo "http://dl-cdn.alpinelinux.org/alpine/v3.11/main" >> /etc/apk/repositories \
+#   && echo "http://dl-cdn.alpinelinux.org/alpine/v3.11/community" >> /etc/apk/repositories
 
 CMD []