How to Install Docker on Ubuntu 22.04?

Jul 12, 2022 . Admin

Hi Guys

In this tutorial we will go over the demonstration of How to Install Docker on Ubuntu 22.04?. you'll learn Install and Use Docker on Ubuntu 22.04. I would like to show you Install Docker Engine on Ubuntu 22.04. This article goes in detailed on Do I Install Docker on Ubuntu 22.04?. follow bellow step for Can I Run Docker in Ubuntu 22.04 VM?.

You can use this post for ubuntu 14.04, ubuntu 16.04, ubuntu 18.4, ubuntu 20.04, ubuntu 21 and ubuntu 22.04 versions.

(1). Update System Dependencies

(2). Install Docker

(3). Configure Sudo permissions for Docker

(4). Using Docker Commands

Step 1: Update System Dependencies

following command to update the packages to the latest version available:

sudo apt update
sudo apt upgrade
Step 2: Install Docker

Make sure we install the latest version of Docker from the official Docker repository. The official Ubuntu repository also has the Docker installation package, but it may not be the latest version.

Let’s play with some commands to install docker on ubuntu 22.04 system; is as follows:

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

Add the GPG key of Docker repository.

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --
dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg

Now add the Docker repository of Ubuntu 22.04 (jammy) to the apt sources.

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

Update the packages index and setup your server to install Docker from official Docker repo.

sudo apt update
sudo apt-cache policy docker-ce

Then we will receive an output similar to this: as is follow:

Output
docker-ce:
    Installed: (none)
    Candidate: 5:20.10.14~3-0~ubuntu-jammy
    Version table:
        5:20.10.14~3-0~ubuntu-jammy 500
            500 https://download.docker.com/linux/ubuntu jammy/stable amd64 Packages
        5:20.10.13~3-0~ubuntu-jammy 500
            500 https://download.docker.com/linux/ubuntu jammy/stable amd64 Packages

Execute the following command on command prompt to install Docker on ubuntu 22.04 system:

sudo apt install docker-ce

To check the status of Docker you can use the following command.

sudo systemctl status docker

The output will be like this.

Output
● docker.service - Docker Application Container Engine
    Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)
    Active: active (running) since Wed 2022-05-04 06:43:00 UTC; 2min 28s ago
TriggeredBy: ● docker.socket
        Docs: https://docs.docker.com
    Main PID: 12995 (dockerd)
        Tasks: 8
    Memory: 38.6M
            CPU: 400ms
        CGroup: /system.slice/docker.service
                └─12995 /usr/bin/dockerd -H fd:// 
--containerd=/run/containerd/containerd.sock
Step 3: Configure Sudo permissions for Docker

Execute the following command to the docker group at a command prompt with a username:

sudo usermod -aG docker username

And restart SSH or open a new terminal to see the changes.

Step 4: Using Docker Commands

Use the following command to view the system information about Docker; is as follows:

docker info
Download Docker Images 
docker run hello-world

If the output you get is similar to the below then you can access and download images from Docker Hub.

Output
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
2db29710123e: Pull complete 
Digest: sha256:10d7d58d5ebd2a652f4d93fdd86da8f265f5318c6a73cc5b6a9798ff6d2b2e67
Status: Downloaded newer image for hello-world:latest

Hello from Docker!
This message shows that your installation appears to be working correctly.

Execute the following command to see downloaded images:

docker images
Docker Commands

Use the following command to view all active containers:

docker ps

Use the following command to view all containers which are active and inactive:

docker ps -a

Use the following command to view the latest container:

docker ps -l

To start a docker container, use docker start command followed by the Container ID or Container Name:

docker start container-id/name

You can use the docker stop command followed by the container ID or container name to stop the container:

docker stop container-id/name

If you no longer need the container you can remove the container with the docker rm followed by Container ID or Container Name:

docker rm container-id/name

To enter into interactive shell we can use the following command:

docker run -it container-id/name
#Ubuntu

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