In this tutorial, we will show you how to install Docker on Ubuntu 20.04 LTS. For those of you who didn’t know, Docker is an open-source project that automates the deployment of applications inside the software container. The container allows the developer to package up all project resources such as libraries, dependencies, assets, etc.
This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘
sudo‘ to the commands to get root privileges. I will show you through the step by step installation Docker on Ubuntu 20.04 Focal Fossa.
Install Docker on Ubuntu 20.04 LTS Focal Fossa
Step 1. First, make sure that all your system packages are up-to-date by running these following
apt commands in the terminal.
It’s recommended to uninstall any old Docker software before proceeding:
Now we enable the Docker repository, import the repository GPG key, and install the package:
curl-fsSLhttps://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
Next, add the Docker APT repository to your system:
sudoadd-apt-repository"deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
Once, that’s imported, update
apt again and install it:
To install a specific version, first list all the available versions in the Docker repository:
Check for docker version:
To check whether docker is running or not, type the following command:
To verify that Docker has been successfully installed and that you can execute the docker command without prepending
sudo, we’ll run a test container:
The command will download the test image, if not found locally, run it in a container, print a “Hello from Docker” message, and exit.
Congratulations! You have successfully installed Docker. Thanks for using this tutorial for installing Docker on Ubuntu 20.04 LTS (Focal Fossa) system. For additional help or useful information, we recommend you to check the official Docker website.