How To Install docker.io on Ubuntu 20.04

In this tutorial we learn how to install docker.io on Ubuntu 20.04. docker.io is Linux container runtime Linux container runtime

Introduction

In this tutorial we learn how to install docker.io on Ubuntu 20.04.

What is docker.io

docker.io is:

Docker complements kernel namespacing with a high-level API which operates at the process level. It runs unix processes with strong guarantees of isolation and repeatability across servers.

Docker is a great building block for automating distributed systems: large-scale web deployments, database clusters, continuous deployment systems, private PaaS, service-oriented architectures, etc.

This package contains the daemon and client. Using docker.io on non-amd64 hosts is not supported at this time. Please be careful when using it on anything besides amd64.

Also, note that kernel version 3.8 or above is required for proper operation of the daemon process, and that any lower versions may have subtle and/or glaring issues.

Package: docker.io Architecture: amd64 Version: 19.03.8-0ubuntu1 Built-Using: glibc (= 2.31-0ubuntu4) Priority: optional Section: universe/admin Origin: Ubuntu Maintainer: Ubuntu Developers [email protected] Original-Maintainer: Paul Tagliamonte [email protected] Bugs: https://bugs.launchpad.net/ubuntu/+filebug Installed-Size: 187096 Depends: adduser, containerd (>= 1.2.6-0ubuntu1~), iptables, debconf (>= 0.5) | debconf-2.0, libc6 (>= 2.8), libdevmapper1.02.1 (>= 2:1.02.97), libseccomp2 (>= 2.1.0), libsystemd0 (>= 209~) Recommends: ca-certificates, cgroupfs-mount | cgroup-lite, git, pigz, ubuntu-fan, xz-utils, apparmor Suggests: aufs-tools, btrfs-progs, debootstrap, docker-doc, rinse, zfs-fuse | zfsutils Breaks: docker (« 1.5~) Replaces: docker (« 1.5~) Filename: pool/universe/d/docker.io/docker.io_19.03.8-0ubuntu1_amd64.deb Size: 38890728 MD5sum: 6189152ff94de947512ceac4fc57f4d0 SHA1: 1c4ec656f40d322d4c61f9c94563fbe32f20e7d0 SHA256: 05392160916a5611fe36b1c1c393d8fc9bfd696ef64704ca7e25be0db33f9f67 Homepage: https://www.docker.com/community-edition Description-en: Linux container runtime Docker complements kernel namespacing with a high-level API which operates at the process level. It runs unix processes with strong guarantees of isolation and repeatability across servers.

Docker is a great building block for automating distributed systems: large-scale web deployments, database clusters, continuous deployment systems, private PaaS, service-oriented architectures, etc.

This package contains the daemon and client. Using docker.io on non-amd64 hosts is not supported at this time. Please be careful when using it on anything besides amd64.

Also, note that kernel version 3.8 or above is required for proper operation of the daemon process, and that any lower versions may have subtle and/or glaring issues.

There are three methods to install docker.io on Ubuntu 20.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.

Install docker.io Using apt-get

Update apt database with apt-get using the following command.

sudo apt-get update

After updating apt database, We can install docker.io using apt-get by running the following command:

sudo apt-get -y install docker.io

Install docker.io Using apt

Update apt database with apt using the following command.

sudo apt update

After updating apt database, We can install docker.io using apt by running the following command:

sudo apt -y install docker.io

Install docker.io Using aptitude

If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu. Update apt database with aptitude using the following command.

sudo aptitude update

After updating apt database, We can install docker.io using aptitude by running the following command:

sudo aptitude -y install docker.io

How To Uninstall docker.io on Ubuntu 20.04

To uninstall only the docker.io package we can use the following command:

sudo apt-get remove docker.io

Uninstall docker.io And Its Dependencies

To uninstall docker.io and its dependencies that are no longer needed by Ubuntu 20.04, we can use the command below:

sudo apt-get -y autoremove docker.io

Remove docker.io Configurations and Data

To remove docker.io configuration and data from Ubuntu 20.04 we can use the following command:

sudo apt-get -y purge docker.io

Remove docker.io configuration, data, and all of its dependencies

We can use the following command to remove docker.io configurations, data and all of its dependencies, we can use the following command:

sudo apt-get -y autoremove --purge docker.io

References

Summary

In this tutorial we learn how to install docker.io package on Ubuntu 20.04 using different package management tools: apt, apt-get and aptitude.