Docker is an open-source containerization platform that allows you to quickly build, test, and deploy applications as portable containers that can run virtually anywhere. A container represents a runtime for a single application and includes everything the software needs to run.

Docker is an integral part of modern software development and DevOps continuous integration and deployment pipelines.

This tutorial covers how to install Docker on an Ubuntu 20.04 machine.

Docker is available for installation from the standard Ubuntu 20.04 repositories, but it may not always be the latest version. We’ll install the latest Docker package from the official Docker’s repositories.

Installing Docker on Ubuntu 20.04

Installing Docker on Ubuntu is fairly straightforward. We’ll enable the Docker repository, import the repository GPG key, and install the package.

First, update the packages index and install the dependencies necessary to add a new HTTPS repository :

sudo apt update
sudo apt install apt-transport-https ca-certificates curl gnupg-agent software-properties-common
Import the repository’s GPG key using the following `[curl](https://linuxize.com/post/curl-command-examples/)` command:

#ubuntu 20.04 #ubuntu #docker