Nginx + 2 RoR3 приложения, один из которых на Sub Uri. Как совместить?

upstream app {
        server IP:PORT1;
}

upstream app2 {
        server IP:PORT2;
}

server {
        server_name app.domain.tld;

        client_max_body_size 8m;
        keepalive_timeout 5;

        access_log  /var/log/nginx/app.domain.tld_access.log;
        error_log   /var/log/nginx/app.domain.tld_error.log;

        # redmine
        location / {
                try_files $uri $uri/index.html $uri.html @redmine;
        }

        location @redmine {
                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                proxy_set_header X-Real-IP $remote_addr;
                proxy_set_header Host $http_host;
                proxy_redirect off;

                proxy_pass http://app;
        }

        # gitlab web interface
        location /app2 {
                try_files $uri $uri/index.html $uri.html @gitlab;
        }

        location @gitlab {
                rewrite /app2/(.*) /$1 break;
                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                proxy_set_header X-Real-IP $remote_addr;
                proxy_set_header Host $http_host;
                proxy_redirect off;

                proxy_pass http://app2;
        }

        location ~ ^/(conf|includes)/ {
                return 404;
        }

        location ~ /\. {
                deny  all;
        }
}

rails_env = ENV['RAILS_ENV'] || 'production'

app_dir = "/path-to-redmine"
worker_processes 2

user "redmine", "redmine"
working_directory app_dir

listen PORT1, :tcp_nopush => true

timeout 30

pid "#{app_dir}/tmp/pids/unicorn.pid"
stderr_path "#{app_dir}/log/unicorn.stderr.log"
stdout_path "#{app_dir}/log/unicorn.stdout.log"

# Preload Rails App for Performance
preload_app true

before_fork do |server, worker|
  defined?(ActiveRecord::Base) and
    ActiveRecord::Base.connection.disconnect!
end

after_fork do |server, worker|
  defined?(ActiveRecord::Base) and
    ActiveRecord::Base.establish_connection
end

app_dir = "/path-to-gitlab"
worker_processes 2

user "gitlab", "gitlab"
working_directory app_dir

preload_app true

timeout 30

listen PORT2

pid "#{app_dir}/tmp/pids/unicorn.pid"
stderr_path "#{app_dir}/log/unicorn.stderr.log"
stdout_path "#{app_dir}/log/unicorn.stdout.log"

before_fork do |server, worker|
  defined?(ActiveRecord::Base) and ActiveRecord::Base.connection.disconnect!

  old_pid = "#{server.config[:pid]}.oldbin"

  if File.exists?(old_pid) && server.pid != old_pid
    begin
      sig = (worker.nr + 1) >= server.worker_processes ? :QUIT : :TTOU
      Process.kill(sig, File.read(old_pid).to_i)
    rescue Errno::ENOENT, Errno::ESRCH
      # someone else did our job for us
    end
  end
end

after_fork do |server, worker|
  defined?(ActiveRecord::Base) and ActiveRecord::Base.establish_connection
end