How to build j2ee application on OpenShift (1)

FYI:

http://www.freehao123.com/openshift-wp-dz/

I chose these cartriges:

• Tomcat 7 (JBoss EWS 2.0)  
• MySQL 5.5  
• phpMyAdmin 4.0

use shell to connect 

[mssssssssseng.rhcloud.com 5720d2ssssssssss001b]\> ls
app-deployments  app-root  git    jbossews  mysql  phpmyadmin

app-root/runtime/repo

[msssssssssng.rhcloud.com repo]\> ls
pom.xml  README.md  src  webapps

then I can mkdir and do somethings under this directory.

But How To Build? Still Studying...