Steps to Install docker ubuntu 14.04 ;
#!/bin/sh#install docker ubuntu 14.04 LTS
#run as root fagget
apt-get update
apt-get install apt-transport-https ca-certificates
apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D
echo "deb https://apt.dockerproject.org/repo ubuntu-trusty main" > /etc/apt/sources.list.d/docker.list
apt-get update
apt-get purge lxc-docker
apt-get install docker-engine