diff --git a/docker/mariadb/Dockerfile b/docker/mariadb/Dockerfile
index 86c725b5fb..aaa5678045 100644
--- a/docker/mariadb/Dockerfile
+++ b/docker/mariadb/Dockerfile
@@ -1,7 +1,7 @@
 FROM kollaglue/fedora-rdo-base
 MAINTAINER Lars Kellogg-Stedman <lars@redhat.com>
 
-RUN yum -y install mariadb-galera-server
+RUN yum -y install mariadb-galera-server; yum clean all
 ADD /entrypoint.sh /entrypoint.sh
 
 VOLUME /var/lib/mysql