Update after_up.sh

apps/roles/mingdao/files/after_up.sh

@@ -4,5 +4,5 @@ sudo systemctl stop mingdao
 sudo docker stop $(docker ps -aq)
 sudo docker rm $(docker ps -aq)
 rm -rf /data/mingdao
-/bin/rm -f /data/apps/mingdao/installer/first
+rm -f /data/apps/mingdao/installer/first
 sudo systemctl start mingdao