Our neighbor TeamCity team just released new major version of JetBrains TeamCity — definitely the best continuous integration and build server.
One of the guys has prepared a quick demo showing how he uses TeamCity for building and testing his own Ruby on Rails project.
Check it out in TeamCity Developers’ Blog.
It looks interesting.

Hi,
do you know when (and if) there will be a TeamCity plugin available for RubyMine?
Simon
@Simon: We are definitely going to make TeamCity plugin work with RubyMine. And we are planning to do it in the nearest month or two.
Thanks for your feedback.
-Eugene