Nothing comes without a little effort, so you need to install docker-ce, if you have not done so already.
First, we need to check whether the three prerequisite packages are installed. To check, perform the following:
sudo apt-get -y install apt-transport-https ca-certificates curl
Then, add the docker.com keys to our local keyset:
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
Add the Docker repository to our system (Ubuntu users, I assume you use a 64-bit CPU):
sudo add-apt-repository ...