Ruby Environment Configurator to use project's Gemfile

RVM supports reading the required ruby version from the project's Gemfile. This is very common for rails projects but I can't seem to find any way to make it work.

We have many different projects on many different ruby versions so setting them manually on each TeamCity project is a showstopper for us. Hoping to demo TeamCity (big fan) to large consulting team currently using Jenkins, but this is a pretty annoying impediment. I can get command-line scripts to do this right but not the Rake task which means I can't collect test results.

Is there some way to make this work?

Using Gemfile with rvm:

https://rvm.io/workflow/projects