some DNS error when deploying on openshift

Trying to deploy roller on OpenShift.
It seems I accomplished everything described in Glenn Mazza's manual: https://web-gmazza.rhcloud.com/blog/entry/apache-roller-on-openshift ,
in that difference that I have deployed as root application "ROOT.war".
After deploying and setting up preferences I don't see the selected theme.
Firebug shows that page requests CSS by the following link: http://localhost:8080/blog/resource/css/bootstrap.css .
I don't understand why it gets to "localhost:8080" instead of my app's domain name.
What I did wrong?