Rails 2.3.11 config.ru File

I have a Rails 2.3.11 project that worked fine until I added the
config.ru file (required by POW). Now when I deploy to Apache/
Passenger, I get the error: Missing the Rails 2.3.11 gem. The
config.ru file contains the code I pulled form an old Rails guide:

require "config/environment"
use Rails::Rack::LogTailer
use Rails::Rack::Static
run ActionController::Dispatcher.new

Can someone tell me what the config.ru file should look like?