namespace :invoke do

    # Defalut to :app roles
    rake_roles = fetch(:rake_roles, :app)
  
    desc "Execute a rake task on a remote server (cap invoke:rake TASK=db:migrate)"
    task :rake do
      if ENV['TASK']
        on roles(rake_roles) do
          within current_path do
            with rails_env: fetch(:rails_env) do
              execute :rake, ENV['TASK']
            end
          end
        end
  
      else
        puts "\n\nFailed! You need to specify the 'TASK' parameter!",
             "Usage: cap <stage> invoke:rake TASK=your:task"
      end
    end
  
  end