Running Sinatra in the Pakyow Environment

Pakyow's new Runtime Environment lets you mount multiple endpoints in a single process. It supports any Rack-compatible endpoint, which made me wonder if it would be possible to run a Sinatra app within the Pakyow Environment. Here's a screencast with my findings:

Btw, if you want to learn more about Pakyow Environment, last week's post would be a good place to start.