diff --git a/Dockerfile b/Dockerfile
index 682b8ae..1c7a819 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -36,5 +36,5 @@ RUN rm -rf WeChatSetup.exe && rm -rf install-wechat.sh
 EXPOSE 5900 19088
 
 COPY cmd.sh /cmd.sh
-RUN chmod +x /cmd.sh
+RUN sudo chmod +x /cmd.sh
 CMD ["/cmd.sh"]
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