Docker is an open-source project for automating the deployment software in packages called containers.
Docker can be installed from Ubuntu's default repositories. Open a Terminal window by typing ctrl-alt-t keys in ubuntu. Then type the following commands.
sudo apt update
You will be prompted for your password.
sudo apt install docker.io
Press Y if prompted.
To verify the version of Docker, run:
docker --version
To start and enable the Docker service, run:
sudo systemctl enable docker --now
To verify service, run:
sudo systemctl status docker