Capistrano recipe for remote rake invocation.

remote_rake_recipe.rb

namespace :remote_rake do
	desc 'Run a task on a remote server.'
	# run like: cap remote_rake:invoke task="db:reset"
	task :invoke do
		run("cd #{deploy_to}/current && bundle exec rake #{ENV['task']} RAILS_ENV=#{rails_env}")
	end
end