Looks like this is great project. We are using powerful dedicated server to host multiple sites/apps like the way shared hosting providers do. Maintenance and

Looks like this is great project. We are using powerful dedicated server to host multiple sites/apps like the way shared hosting providers do. Maintenance and upgrade is so painful, I am trying to move to something else. I looked into Docker but seems things are still not stable. Another approach I am looking into is KVM virtualization. Aactually, all I want is something like Heroku (but self hosted or German providers cause our clients are German and that's important) where we can host each app on it's own container. So far, this meets all the requirements.