how install docker in terminal 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 in ubuntu

$ sudo apt-get remove docker docker-engine docker.io
$ sudo apt-get update
$ sudo apt install docker.io
$ sudo snap install docker
$ docker --version

Example 3: install docker linux

sudo apt-get install -y linux-image-generic-lts-trusty linux-headers-generic-lts-trusty

Example 4: install docker linux

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