there is no file named mkimage-rinse.sh in contrib floder, should delete

it

Signed-off-by: dingwei <dingwei@cmss.chinamobile.com>

contrib/mkimage-yum.sh

@@ -3,8 +3,7 @@
 # Create a base CentOS Docker image.
 #
 # This script is useful on systems with yum installed (e.g., building
-# a CentOS image on CentOS).  See contrib/mkimage-rinse.sh for a way
-# to build CentOS images on other systems.
+# a CentOS image on CentOS).
 
 set -e