diff --git a/Dockerfile b/Dockerfile
index f79df62a..582d5bd0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -17,7 +17,10 @@ LABEL MAINTAINER="https://casdoor.org/"
 COPY --from=BACK /go/src/casdoor/ ./
 COPY --from=BACK /usr/bin/wait-for-it ./
 COPY --from=FRONT /web/build /web/build
-CMD chmod 777 /tmp && service mariadb start&& mysqladmin -u root password ${MYSQL_ROOT_PASSWORD} &&./wait-for-it localhost:3306 -- ./server
+CMD chmod 777 /tmp && service mariadb start&&\
+if [ "${MYSQL_ROOT_PASSWORD}" = "" ] ;then MYSQL_ROOT_PASSWORD=123456 ; fi&&\
+mysqladmin -u root password ${MYSQL_ROOT_PASSWORD} &&\
+./wait-for-it localhost:3306 -- ./server
 
 
 FROM alpine:latest