http://www.hostingrails.com/forums/wiki_thread/6
The problem comes to when I want to redirect an addon-domain or a subdomain to the public-folder of my production app. Since I use Capistrano, the full path to the app changes each time I do "cap deploy", since it makes a new revision. The path to the current /public for 43actions.com looks like /home/actions/apps/fortythree/releases/2007231232/public.
There is of course a symlink from fortythree/current to the current revision, but when I tried adding the subdomain (betaflickr.43actions.com) it didn't use the symlinked domain but rather the full releases/200....etc, path.
How can I overcome this problem?