Install Docker in Ubuntu Linux

Docker is an open platform for developing, shipping, and running applications. Docker enables you to separate your applications from your infrastructure so you can deliver software quickly. With Docker, you can manage your infrastructure in the same ways you manage your applications. In the following article, you will know how to install docker in Ubuntu

Prerequisites

Dependencies

• Update the system.

bash
sudo apt update

• Install required dependencies

bash
sudo apt install ca-certificates curl gnupg lsb-release

Setup GPG Key

• Add official docker GPG keys to your system
• Make keyrings folder

bash
sudo mkdir -p /etc/apt/keyrings

• Add GPG keys to keyrings folder

bash
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg

Setup Docker Repository

• Add docker download repository to your system

bash
echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

Install Docker

• Update the system.

bash
sudo apt update

• Install docker

bash
sudo apt install docker-ce docker-ce-cli containerd.io docker-compose-plugin

Post Install

• Add a docker to the user group to use the docker command without sudo

bash
sudo usermod -aG docker $USER

Other Operating Systems

• If you want to install Docker in other linux distributions check out the following links

• For Debian - Install Docker in Debian Linux

• For Ubuntu - Install Docker in Ubuntu Linux

• For Fedora - Install Docker in Fedora Linux