Upstart script for unicorn, bundler and a user contained rvm installation

unicorn.conf

description     "Unicorn"

# starting unicorn with bundler, and a user contained rvm:


start on filesystem or runlevel [2345]
stop on runlevel [!2345]


chdir /path/to/current
env RAILS_ENV=production

# as the unicorn master detaches itself (and you probably want to restart it safely with capistrano), a working solution is to use the pre-start and post-stop flags:

pre-start script

        exec su - <app-user> -c "cd /path/to/current; source ~/.rvm/scripts/rvm; ~/.rvm/bin/rvm-shell -c 'bundle exec unicorn -c config/unicorn.rb -E production -D'"
end script

post-stop exec kill `cat /path/to/unicorn.pid`