Mine

$HTTP["host"] =~ "test.miradi.org" {
	fastcgi.server = (
	".fcgi" =>
	  ( "localhost" =>
	    (
	      "socket" => "/tmp/test.rails-fastcgi.socket",
	     "bin-path" => "/var/www/test.miradi.org/public/dispatch.fcgi",
	     "bin-environment" => ("RAILS_ENV" => "production" ),
	    )
	  ),
	)