running rvm based cron job

rvm is requires a bash login to work.
in order to execute cron jobs, run this:

*/5 * * * * 'sh /home/myuser/versions/current/runme.sh'

create a shell file,
change working directory to rails root,
and run the required job, such as delayed_job once and exit

vi /home/myuser/versions/current/runme.sh
cd /home/myuser/versions/current
/bin/bash -l -c 'RAILS_ENV=production bundle exec rake jobs:workoff'