sudo apt-get update

sudo apt-get install apt-transport-https ca-certificates

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

sudo vi /etc/apt/sources.list.d/docker.list

cd /etc/apt/

ls
cd sources.list.d/
ls
sudo vi /etc/apt/sources.list.d/docker.list
cd /home
ls
cd si84/
sudo apt-get update
sudo apt-get purge lxc-docker
apt-cache policy docker-engine
sudo apt-get install linux-image-extra-$(uname -r)
sudo apt-get update
sudo apt-get install docker-engine
sudo service docker start