install docker on ubuntu

sudo apt-get update
sudo apt-get upgrade
sudo apt install docker.io
systemctl start docker
systemctl enable docker
docker --versionsudo apt install docker.io $ sudo apt-get update
 $ sudo apt-get install docker-ce docker-ce-cli containerd.io
$ curl -L https://github.com/docker/machine/releases/download/v0.16.0/docker-machine-`uname -s`-`uname -m` >/tmp/docker-machine &&
chmod +x /tmp/docker-machine &&
sudo cp /tmp/docker-machine /usr/local/bin/docker-machine
sudo apt install docker.io -ysudo apt update
sudo apt upgrade