Migrate Docker to APT repo in Ubuntu

#!/bin/bash

UBUNTU_VERSION_CODENAME="$(lsb_release -c | awk '{ print $2 }')"

apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D

echo "deb https://apt.dockerproject.org/repo ubuntu-${UBUNTU_VERSION_CODENAME} main" > /etc/apt/sources.list.d/docker.list

apt-get update
apt-get purge -y lxc-docker*
apt-get install -y docker-engine