how to use docker in ubuntu code example

Example 1: how to install docker ubuntu

sudo apt-get update
sudo apt-get upgrade
sudo apt install docker.io
systemctl start docker
systemctl enable docker
docker --version

Example 2: install docker ubuntu

$ curl -fsSL https://get.docker.com -o get-docker.sh
$ sudo sh get-docker.sh

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Example 3: install docker machine ubuntu

$ 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

Example 4: docker ubuntu installation

$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -