Upgrade to Docker 1.8 on Ubuntu 14.04

upgrade-docker-to-1.8.sh

#/bin/bash

set -o errexit
set -o nounset
set -o pipefail

if [[ $EUID -ne 0 ]]; then
  echo "This script must be run as root" 1>&2
  exit 1
fi

echo deb https://apt.dockerproject.org/repo ubuntu-`cat /etc/lsb-release | grep DISTRIB_CODENAME | cut -d'=' -f2` main > /etc/apt/sources.list.d/docker.list
apt-key adv --keyserver keyserver.ubuntu.com --recv-keys F76221572C52609D
apt-get update
apt-get purge 'lxc-docker*' 'docker.io*'
apt-get install docker-engine