Xenial Vagrant template has been added.

vagrant/TEMPLATE/Vagrantfile

+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+
+IMAGE = 'matefarkas/xenial:base'
+
+Vagrant.configure(2) do |config|
+  config.vm.provider "docker" do |docker|
+    docker.image = IMAGE
+  end
+end