diff --git a/Dockerfile b/Dockerfile
index 9936f56..316fda7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,8 +7,7 @@ ARG BUGGY=false
 # 设置时区
 RUN apk add --no-cache tzdata && \
     cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && \
-    echo "Asia/Shanghai" > /etc/timezone && \
-    apk del tzdata
+    echo "Asia/Shanghai" > /etc/timezone
 
 ENV TZ=Asia/Shanghai \
     APP_VERSION=${APP_VERSION} \