$ ruby script/rails server webrick -e production
/home/anon/programme/redmine/redmine-2.0.3/config/boot.rb:1:in `require': no such file to load -- rubygems (LoadError)
        from /home/anon/programme/redmine/redmine-2.0.3/config/boot.rb:1:in `<top (required)>'
        from script/rails:5:in `require'
        from script/rails:5:in `<main>'