Installing docker

To install docker, run the following commands in the terminal. (This installation was used for Ubuntu 22.0404.5 )lts). 

$ sudo apt update

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

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

$ echo "deb [arch=$(dpkg --print-architecture) 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

$ sudo apt update

$ apt-cache policy docker-ce

$ sudo apt install docker-ce

$ sudo systemctl status docker

For more information refer to this website: https://www.digitalocean.com/community/tutorials/how-to-install-and-use-docker-on-ubuntu-22-04