In today’s fast-paced digital landscape, businesses are constantly looking for ways to streamline their application development and deployment processes. Docker, a container engine that uses the Linux Kernel, has emerged as a popular solution for creating, deploying, and running applications efficiently. This article will guide you through the process of installing Docker on Ubuntu 23.10, empowering you with the necessary tools to leverage this powerful technology.

Prerequisites

Before we dive into the installation process, let’s make sure we have all the prerequisites in place. Here’s what you’ll need:

• An Ubuntu 23.10 server
• Administrative access to the server
• An active internet connection

Step 1: Installing Docker

To begin, we’ll install Docker using the apt package manager. Open a terminal and run the following command:

apt install docker.io docker-compose

This command will install both Docker and Docker Compose, a tool for defining and running multi-container Docker applications.

Step 2: Starting and Enabling Docker

Once the installation is complete, we can start and enable the Docker service. Run the following command:

systemctl enable --now docker

This command will start the Docker service and configure it to start automatically on system boot.

To verify if Docker is running correctly, use the following command:

systemctl status docker

If Docker is running, you should see an output similar to the following:

● docker.service - Docker Application Container Engine
Loaded: loaded (/lib/systemd/system/docker.service; enabled; preset: enabled)
Active: active (running) since Wed 2023-10-18 14:56:05 UTC; 2min 53s ago
Docs: https://docs.docker.com
Main PID: 1959 (dockerd)
Tasks: 8
Memory: 23.9M
CPU: 876ms
CGroup: /system.slice/docker.service
└─1959 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.>
Oct 18 14:56:04 ubuntu23 systemd[1]: Starting docker.service - Docker Application Cont>
Oct 18 14:56:04 ubuntu23 dockerd[1959]: time="2023-10-18T14:56:04.444600821Z" level=in>

Step 3: Creating a Docker Group

To avoid having to use sudo each time we run Docker, it is recommended to add your user to the Docker group. To create the Docker group, run the following command:

groupadd docker

Next, add your user to the Docker group by running the following command (replace $USER with your username):

usermod -aG docker $USER

If you’re adding a different user, make sure to replace $USER with the appropriate username.

Step 4: Verifying the Docker Version

Now that Docker is installed, let’s check the version to ensure everything is working correctly. Run the following command:

docker --version

If Docker is installed correctly, you should see an output similar to the following:

Docker version 24.0.5, build 24.0.5-0ubuntu1

Step 5: Testing Docker with Hello World

To test if Docker is functioning properly, we’ll run a simple “Hello World” container. Use the following command:

docker run hello-world

If Docker is working as expected, you should see an output similar to the following:

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

Congratulations! Docker is now successfully installed on your Ubuntu 23.10 server. You’re ready to harness the power of containerization for your application development and deployment needs.

Conclusion

In this article, we explored the process of installing Docker on Ubuntu 23.10. We covered each step, from installing Docker using the apt package manager to testing Docker with a “Hello World” container. Now that you have Docker up and running, you can leverage its capabilities to create, deploy, and run applications efficiently.

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Remember, Docker is a powerful tool that can revolutionize your application development and deployment workflows. By leveraging Docker’s containerization technology, you can streamline your processes, improve scalability, and enhance security. Embrace the power of Docker and unlock a world of possibilities for your business.

Christian Wells