Dokku's definitely a young project and has its teething problems. We've been using a fork of it called Dokku-alt which is getting a bit more love these days -

Dokku's definitely a young project and has its teething problems. We've been using a fork of it called Dokku-alt which is getting a bit more love these days - I'd give that a shot. https://github.com/dokku-alt/dokku-alt https://github.com/dokku-alt/dokku-alt