Dokku (and other things like flynn) get you that heroku experience, but you do a bit yourself. Following the same idea as what the parent said

They're working on this. I was just asked to do a survey about my "team's" PaaS usage and offered an invitation to a working group scheduled later this month.

That’s why they acquired Nanobox, presumably.

Never heard about Nanobox up until now. Interesting, let's see what comes out of that.