how to run ubuntu in docker 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: how to start docker in ubuntu

systemctl start docker
# to start docker from terminal

Example 3: docker run ubuntu container

docker run -it ubuntu

Example 4: install docker on ubuntu with

$ sudo add-apt-repository \
   "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
   $(lsb_release -cs) \
   stable"