For those missing Heroku: there exists Dokku [1], a small Heroku-like implementation for container management. It uses the same underlying buildpacks and you get the same comfort as with Heroku. And it's free to use. You can't deploy to multiple host machines though. But for small projects that fit on a single host, it's very nice to use.
[1] http://dokku.viewdocs.io/dokku/