diff --git a/Dockerfile b/Dockerfile
index efad369f..80e560ac 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,4 +7,5 @@ ENV TimeZone=Asia/Shanghai
 ENV active=dev
 ENV JAVA_OPTS="-Xmx512M -Xms512M"
 RUN ln -snf /usr/share/zoneinfo/$TimeZone /etc/localtime && echo $TimeZone > /etc/timezone
+EXPOSE 7777
 ENTRYPOINT java $JAVA_OPTS -Djava.security.egd=file:/dev/./urandom -Dserver.port=7777 -Dcsp.sentinel.dashboard.server=localhost:7777 -Dproject.name=sentinel-dashboard -jar /sentinel_dashboard.jar --spring.profiles.active=$active