diff --git a/Dockerfile b/Dockerfile
index 6035888d2b26c479dc9879733ab2b1b8923bdde8..ad3337b4b33a984eaf227ec761f7dc4bdd2fd1c9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM centos:7
+FROM centos
 MAINTAINER RenFei <i@renfei.net>
 
 RUN groupadd kingbase && useradd -g kingbase -m -d /opt/kingbase -s /bin/bash kingbase