Capfile

load 'deploy' if respond_to?(:namespace)
default_run_options[:pty] = true
load 'config/deploy'

deploy.rb

set :user, ""
set :domain, ""
set :app_class, 'App' # Leave this as is since this is the app class name
set :application, "app_name"

set :scm, :git
set :repository,  "foo.com/git.git"
set :branch, 'master'
set :git_shallow_clone, 1

set :deploy_to, "/dir"
set :deploy_via, :remote_cache
set :use_sudo, false # ?
set :apache_vhost_dir, "/etc/apache2/sites-enabled/"

server domain, :app, :web

namespace :deploy do
  task :restart, :roles => :app, :except => { :no_release => true } do
    run "#{try_sudo} touch #{File.join(current_path,'tmp','restart.txt')}"
  end
end