I would like to deploy my app as ROOT app in wildfly 8 domain ha mode.

Howto for jboss 7 is described here http://www.mastertheboss.com/jboss-web-server/how-to-deploy-a-web-application-on-the-root-context-on-jboss-as-7

and here http://www.mastertheboss.com/jboss-web-server/how-do-you-configure-a-web-application-as-default-web-app

How can I do it with undertow ?