CODE EXAMPLE FOR SHELL

Installing Docker Engine in Linux/Ubuntu

sudo apt-get install docker-ce docker-ce-cli containerd.io
apt-cache policy docker-ce
apt-cache madison docker-ce
# sudo apt-get install docker-ce=<VERSION_STRING> docker-ce-cli=<VERSION_STRING> containerd.io
Example
sudo apt-get install docker-ce=5:18.09.9~3–0~ubuntu-bionic docker-ce-cli=5:18.09.9~3–0~ubuntu-bionic containerd.io
docker — version
sudo service docker status