context
I've a running app on Openshift using a nodejs (nodejs-0.10). I would like to add a ngix as first proxy to serve static files only.
problem
The question is how to add nginx to a running app on Openshift. I saw this cartridge gsterjov/openshift-nginx-cartridge but the README instructs how to create a new app using the nginx, but not how to add it to an existing app.