title: How to refresh Rails / Sprockets to be aware of new manifest on production server after assets:precompile
body: <p>We have a use case where we need to run assets:precompile outside of the deploy/restart process, and therefore preferably without having to restart the Rails server processes.  Is this possible in a Passenger environment?</p>
  
  <p>I've been banging my head trying a bunch of stuff within Rake tasks and fiddling with Rails.application.config.assets stuff, but nothing makes the application pickup the changes to the digests except restarting Passenger with <code>/usr/bin/env touch ~/project/current/tmp/restart.txt</code></p>