In this post, we will learn how to install Docker on Ubuntu 22.04 LTS, 20.04 LTS, 18.04 LTS and 16.04 LTS. We have installed the Docker by using shell script in Ubuntu Operating System. We will use the recommended steps and commands to install docker on Ubuntu. We have clubbed all the recommended commands in our shell script for installing Docker.
Brief Introduction
Docker is a container platform software, by using Docker we can create containers. Through Docker we can easily manage the containers and that is the reason it is quite popular.
Requirements
Here are the requirements for installing Docker.
1. 64 Bit Operating System: Docker Engine is supported on x86_64 (or amd64), armhf, arm64, s390x (IBM Z), and ppc64le (IBM Power) architectures
2. Operating System (We recommend to use LTS):
- Ubuntu Jammy 22.04 (LTS)
- Ubuntu Focal 20.04 (LTS)
- Ubuntu Bionic 18.04 (LTS)
- Ubuntu Xenial 16.04 (LTS)
Note:
Remove the docker if it is already installed.
sudo apt-get remove docker docker-engine docker.io containerd runc sudo apt-get purge docker docker-engine docker.io containerd runc
Steps To Install Docker On Ubuntu
Create a file which will be the docker installation script.
vi install_docker_ubuntu.sh
Paste the following content in the file.
#!/bin/bash
# Description: Install docker on Ubuntu
# Blog: https://sharadchhetri.com
#
# Docker Supported Architecture: x86_64 (or amd64), armhf, arm64, s390x and ppc64le
#
_arch=$(dpkg --print-architecture)
sudo apt -y update
sudo apt-get install -y apt-transport-https ca-certificates curl gnupg-agent software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
sudo add-apt-repository "deb [arch=$_arch] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
sudo apt-get -y update
sudo apt-get install -y docker-ce docker-ce-cli containerd.io
sudo usermod -aG docker ${USER}
Give executable permission to the shell script.
sudo chmod +x install_docker_ubuntu.sh
Run the script, it will install the docker on Ubuntu.
sh install_docker_ubuntu.sh
Because we have added the current login user to group ‘docker’. To make it effective either logout or restart the system. Here we prefer to reboot the system.
sudo init 6
You can check the docker version by running the command docker --version
Output from our system
sharad@linuxworld:~$ docker --version Docker version 19.03.11, build 42e35e61f3 sharad@linuxworld:~$
You can just pull any image for testing purpose also. For example, here we have pulled the ‘httpd’ image.
sharad@linuxworld:~$ docker pull httpd Using default tag: latest latest: Pulling from library/httpd afb6ec6fdc1c: Pull complete 5a6b409207a3: Pull complete 41e5e22239e2: Pull complete 9829f70a6a6b: Pull complete 3cd774fea202: Pull complete Digest: sha256:590382d0aca313c3b0dbfd7c45afe92c76a729cceab3c8555edc03761b2b1b93 Status: Downloaded newer image for httpd:latest docker.io/library/httpd:latest sharad@linuxworld:~$
If all looks good, the docker is ready to use in your system.
You can Git pull this script from our Github Repo called ‘scripts’.