Listen 8000
<VirtualHost 127.0.0.1:8000>
  DocumentRoot /path/to/my/rails/app/public/
  <Directory /path/to/my/rails/app/public/>
    Options ExecCGI FollowSymLinks
    AddHandler cgi-script .cgi
    AllowOverride all
    Allow from all
    Order allow,deny
  </Directory>
</VirtualHost>