How To Install Docker CE on Ubuntu 22.04|20.04|18.04

How can I install Docker CE on Ubuntu 22.04|20.04|18.04 Linux distribution. Docker Engine is a container runtime engine which allows you to package your applications with all of its dependencies into a standardized unit for software development and distribution.

The Docker containers wrap up a piece of software in a complete filesystem that contains everything it needs to run: code, runtime, system tools, system libraries – anything you can install on a server. This guarantees that it will always run the same, regardless of the environment it is running in.

Let’s install Docker CE on Ubuntu 22.04|20.04|18.04 by following the few steps below.

Step 1: Update System

Ensure your system is updated.

sudo apt -y update

Step 2: Install basic dependencies

There are few dependencies we need to configure Docker repositories and do the actual package installation. Install them by firing the following commands in your terminal.

sudo apt -y install apt-transport-https ca-certificates curl gnupg-agent software-properties-common

Step 3: Install Docker CE

If you have older versions of Docker, remove it and its dependent packages.

sudo apt remove docker docker-engine docker.io containerd runc

Import Docker repository GPG key:

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/trusted.gpg.d/docker-archive-keyring.gpg

You can then add Docker CE repository to Ubuntu

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

Finally install Docker CE on Ubuntu22.04|20.04|18.04:

sudo apt update
sudo apt install docker-ce docker-ce-cli containerd.io

Add your user account to docker group.

sudo usermod -aG docker $USER
newgrp docker

Verify installation by checking Docker version:

$ docker version
Client: Docker Engine - Community
 Version:           20.10.16
 API version:       1.41
 Go version:        go1.17.10
 Git commit:        aa7e414
 Built:             Thu May 12 09:17:23 2022
 OS/Arch:           linux/amd64
 Context:           default
 Experimental:      true

Server: Docker Engine - Community
 Engine:
  Version:          20.10.16
  API version:      1.41 (minimum version 1.12)
  Go version:       go1.17.10
  Git commit:       f756502
  Built:            Thu May 12 09:15:28 2022
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.6.4
  GitCommit:        212e8b6fa2f44b9c21b2798135fc6fb7c53efc16
 runc:
  Version:          1.1.1
  GitCommit:        v1.1.1-0-g52de29d
 docker-init:
  Version:          0.19.0
  GitCommit:        de40ad0

Step 4: Install Docker Compose

Installation of Docker Compose is optional. For those using it, follow our guide below to install.

• How To Install Latest Docker Compose on Linux