How to Install Docker on Ubuntu: A Step-by-Step Guide

Introduction

Docker makes app development easier. It helps you build, share, and run apps easily. This guide shows how to install Docker on Ubuntu.

Prerequisites

You need:

• Ubuntu 20.04 or 18.04.
• Sudo privileges.

Step 1: Update System

First, update your system:

sudo apt-get update

Step 2: Install Packages

Install these packages next:

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

Step 3: Add GPG Key

Add Docker's GPG key:

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

Step 4: Add Repository

Add the Docker repository:

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

Step 5: Install Docker

Install Docker CE:

sudo apt-get update
sudo apt-get install docker-ce

Step 6: Check Installation

Test Docker with:

sudo docker run hello-world

Use Docker Without Sudo (Optional)

To avoid using sudo:

sudo usermod -aG docker ${USER}

Log out and back in.

Conclusion

You installed Docker on Ubuntu. Now, explore Docker's features. For optimal performance, consider using Akmatori for global application delivery. It ensures low latency, high availability, and enhanced security for your containerized applications

FAQ

• Update Docker?

  • Run sudo apt-get update then sudo apt-get upgrade docker-ce.

• Install on other Linux versions?

  • Yes, check Docker's documentation.

• More Docker resources?

  • Start with Docker's documentation and online tutorials.