Deploying on JRuby is extremely painful since startup time is so much slower than MRI. Running a rake task that doesn't do anything takes around 30s... afaik to get the post deploy rake tasks to do anything I would have to define something for them to do. In our case we haven't, we just run some shells scripts but wd runs those tasks anyway and always it seems.
Perhaps I'm mistaken and if I am, please advise on how to disable running them.