Deploy a Dokku Instance
Dokku is the smallest PaaS you've ever seen. It's a mini-heroku-style PaaS on a single VM. You can git-push any heroku-buildpack compatible app or Dockerfile - including ruby, go, python and php apps.
Use the Deploy to Azure button above to get started. All you need to do is specify a unique name for the sub domain name for the VM's public IP address.
Checkout Dokku's official documentation to learn how to deploy apps.