How to Install Docker CE on Ubuntu 22.04

In this tutorial, we are going to explain how to install Docker CE on Ubuntu 22.04 OS.

Docker CE or Docker Community Edition is an open-source application that provides encapsulated environments (containers) that allow applications to run separately from each other on the server.

The containers are isolated from the structure of the OS, and they can not interfere with the work of the main services on the server. Many developers and administrators use Docker on a daily basis. Besides the installation, we will list some of the most used docker commands.

Installing Docker CE on Ubuntu 22.04 is straightforward and may take up to 10 minutes. Let’s get started!

Prerequisites

• A server with Ubuntu 22.04 as OS
• User privileges: root or non-root user with sudo privileges

Step 1. Update the System

Update the system packages to the latest versions available before you start any installation on a fresh OS.

sudo apt-get update -y && sudo apt-get upgrade -y

Step 2. Install Docker Dependencies

Before we install Docker, we need to install some Docker dependencies:

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

Step 3. Add Docker Key and Repo

The docker repository, by default, is not included in the official repository of Ubuntu 22.04. First, we will add the key, then the repo.

To add the GPGK key:

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

Once the GPGK key is added, we can proceed to add the repo:

sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu focal stable"

Step 4. Install Docker

Once the key and repo are added, we can install Docker with the following commands:

sudo apt-get install docker-ce docker-ce-cli containerd.io -y

After successful installation, start and enable the docker service:

sudo systemctl enable docker && sudo systemctl start docker

To check the status of the service, execute the following command:

sudo systemctl status docker

You should receive the following output:

root@host:~# sudo systemctl status docker
● docker.service - Docker Application Container Engine
     Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)
     Active: active (running) since Thu 2023-02-09 03:02:24 CST; 10s ago
TriggeredBy: ● docker.socket
       Docs: https://docs.docker.com
   Main PID: 2361 (dockerd)
      Tasks: 9
     Memory: 26.2M
        CPU: 780ms
     CGroup: /system.slice/docker.service
             └─2361 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock

Docker service is not running on a specific port, but if you want to check the process, you can execute the following command:

ps aux | grep docker

You will receive the following output:

root@host:~# ps aux | grep docker
root        2361  0.0  1.8 1390760 72376 ?       Ssl  03:02   0:00 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock
root        2792  0.0  0.0   9076  2324 pts/0    S+   03:42   0:00 grep docker

Step 5. Using Docker

In this paragraph, we will show you some of the docker commands that might be useful for you.

Check Docker version: docker -v

Listing the running containers: docker ps

Start Docker container: docker start “id-of-container”

Stop Docker container: docker stop “id-of-container”

Restart Docker container: docker restart “id-of-container”

Remove Docker container: docker remove “id-of-container”

Information of Docker: docker info

To read more about docker and its usage, you can always use the command docker help, and you will get a complete list of all docker commands with full explanations:

Usage:  docker [OPTIONS] COMMAND

A self-sufficient runtime for containers

Common Commands:
  run         Create and run a new container from an image
  exec        Execute a command in a running container
  ps          List containers
  build       Build an image from a Dockerfile
  pull        Download an image from a registry
  push        Upload an image to a registry
  images      List images
  login       Log in to a registry
  logout      Log out from a registry
  search      Search Docker Hub for images
  version     Show the Docker version information
  info        Display system-wide information

Management Commands:
  builder     Manage builds
  buildx*     Docker Buildx (Docker Inc., v0.10.2)
  compose*    Docker Compose (Docker Inc., v2.15.1)
  container   Manage containers
  context     Manage contexts
  image       Manage images
  manifest    Manage Docker image manifests and manifest lists
  network     Manage networks
  plugin      Manage plugins
  scan*       Docker Scan (Docker Inc., v0.23.0)
  system      Manage Docker
  trust       Manage trust on Docker images
  volume      Manage volumes

Swarm Commands:
  swarm       Manage Swarm
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That’s it! You just learned how to install Docker Community Edition on Ubuntu 22.04. If learning Docker is difficult, you can sign up for one of our NVMe VPS hosting plans, and we will install and configure Docker CE on Ubuntu 22.04 for you. All you need to do is submit a support ticket; our admins will help you immediately. We are available 24/7.

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