diff --git a/Dockerfile b/Dockerfile
index f311eab..ec189d3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,6 @@
 FROM alpine:latest
+# replace China mirror
+RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.ustc.edu.cn/g' /etc/apk/repositories
 
 RUN apk update && \
     apk add \