diff --git a/guacd/Dockerfile b/guacd/Dockerfile
index 7b327009b..550126e49 100644
--- a/guacd/Dockerfile
+++ b/guacd/Dockerfile
@@ -1,10 +1,10 @@
-FROM dushixiang/guacamole-server:latest
+FROM guacamole/guacd:1.5.5
 
 LABEL MAINTAINER="helloworld1024@foxmail.com"
 
 COPY ./guacd/fonts/Menlo-Regular.ttf /usr/share/fonts/
 COPY ./guacd/fonts/SourceHanSansCN-Regular.otf /usr/share/fonts/
 
-user root
+USER root
 
 RUN mkfontscale && mkfontdir && fc-cache