For using docker commands in Windows and Mac OS, you must install Docker Desktop.

Install docker on ubuntu

# The root user is assumed, otherwise each command must be preceded by sudo
# update software Repositories
apt-get update

# uninstall previous versions of Docker
apt-get remove docker docker-engine

# install docker
apt install

# allow Docker service run at startup
systemctl start docker
systemctl enable docker

# check a current docker version
docker --version