Docker is a popular containerization platform that allows you to package and deploy applications in a lightweight and portable manner. In this blog, we’ll walk through the process of installing Docker on Ubuntu 20.04.

Docker Documentation: https://docs.docker.com/get-started/overview/

Steps:

Before we begin, make sure that your system is up to date by running the following command:

sudo apt-get update

Next, we’ll need to install some packages to allow apt to use a repository over HTTPS:

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

With these packages installed, we can add the Docker GPG key:

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

Next, add the Docker stable repository to your APT sources:

sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"

Update the package manager index again:

sudo apt-get update

Now we’re ready to install Docker. Run the following command to install the latest version of Docker:

sudo apt-get install docker-ce

To verify that Docker is installed and working correctly, run the following command:

sudo docker run hello-world

This should pull the hello-world image from the Docker Hub and run it, displaying a message indicating that Docker is installed and working correctly.

With Docker installed, you’re ready to start containerizing your applications. Enjoy!