Installing Docker

Install the supporting tools that Docker would need to run:

$ sudo apt install apt-transport-https ca-certificates curl \
gnupg-agent software-properties-common

Download the Docker gpg key and add it to the apt package manager:

$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | \ 
sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-\ keyring.gpg

You then need to add the Docker repository to your apt config so that you can download packages from there:

$ echo "deb [arch=amd64 signed-by=/usr/share/\
  keyrings/docker-archive-keyring.gpg] \
  https://download.docker.com/linux/ubuntu \
  $(lsb_release -cs) stable" | sudo tee /etc/apt\
  /sources.list.d/docker.list > /dev/null

Now, finally, install the Docker engine by using the following commands:

$ sudo apt update -y
$ sudo apt install -y docker-ce docker-ce-cli containerd.io

To verify whether Docker is installed successfully,...