capistrano crontab deployment.rb

# *replaces* the deploy user's crontab with config/crontab.txt
# only does this on the *primary* :app server

role :app, "website.com", :primary => true

after "deploy:symlink", "deploy:crontab"

namespace :deploy do
 desc "Install crontab"
  task :crontab, :roles => :app, :only=>{:primary => true} do
    run "crontab #{current_path}/config/crontab.txt"
  end
end