sudo systemctl enable ssh

sudo systemctl start ssh

sudo ufw allow ssh

sudo ufw enable

sudo ufw status

sudo systemctl status apache2

sudo ufw app list

sudo ufw allow 'Apache'

sudo apt-get update

sudo apt-get remove docker docker-engine docker.io

sudo apt install docker.io

sudo systemctl start docker

sudo systemctl enable docker

docker --version

#add user:myself to group

sudo groupadd docker

sudo usermod -a -G  docker myself

sudo gpasswd -a myself docker

check: https://sites.google.com/site/javabitdotnet/ec2/docker