diff --git a/dockerfile b/dockerfile
index 08422ef..b98962e 100644
--- a/dockerfile
+++ b/dockerfile
@@ -1,7 +1,5 @@
 FROM node:18-alpine
 
-RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.tuna.tsinghua.edu.cn/g' /etc/apk/repositories
-
 RUN apk add -U tzdata && cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && apk del tzdata
 
 RUN apk add --no-cache \