This ansible playbook provisions an Ubuntu 14.04 server with a dokku environment that matches what I currently use in dokku-alt, using the official dokku .deb packages instead of building from source.
It also installs some dokku plugins I've tweaked/pinned to work under version 0.3.22.
$ cp inventory.dist inventory.txt
$ vi inventory.txt
$ ansible-playbook --ask-sudo-pass -i inventory.txt main.yml