The OpenShift diy
cartridge documentation can be found at:
http://openshift.github.io/documentation/oo_cartridge_guide.html#diy
See also: https://github.com/xitrum-framework/xitrum-doc/blob/master/guide/ja/deploy.rst#openshift
https://groups.google.com/d/msg/xitrum-framework/HsCpt38pPcM/wFkgILqYhwsJ