Small install script for docker on Ubunttu

docker_on_ubuntu.sh

#!/bin/bash

if [ "$(id -u)" != "0" ]; then
   echo "This script must be run as root" 1>&2
   exit 1
fi

ubuntuVersion=`lsb_release -sr`

case "$ubuntuVersion" in
  14.04) echo Trusty
    debianRepo="https://apt.dockerproject.org/repo ubuntu-trusty main"
    ;;
  15.10) echo Wily
    debianRepo="https://apt.dockerproject.org/repo ubuntu-wily main"
    ;;
  16.04) echo Xenial
    debianRepo="https://apt.dockerproject.org/repo ubuntu-xenial main"
    ;;
  *) >&2 echo "Ubuntu version not supported"
    exit 1
esac


apt-get update
apt-get install -y apt-transport-https ca-certificates
apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D

echo "deb $debianRepo" > /etc/apt/sources.list.d/docker.list

apt-get update
apt-get purge lxc-docker
apt-get install -y linux-image-extra-$(uname -r) apparmor docker-engine
docker run hello-world

# install docker compose
curl -L https://github.com/docker/compose/releases/download/1.7.1/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose
chmod +x /usr/local/bin/docker-compose