diff --git a/Dockerfile b/Dockerfile
index 2213db2..b71f620 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@ FROM alpine:3.18.4
 RUN mkdir /app
 WORKDIR /app
 COPY demo .
-EXPOSE 8888
+EXPOSE 9999
 RUN chmod 777 demo
 CMD ./demo
 #END
\ No newline at end of file