Detailed Guide to Installing Docker on AlmaLinux 9

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Published date:24/3/2026 Update:11/8/2026 Views:171 Reviews: 5.0/5232reviews

Docker simplifies application deployment and management on a VPS, especially when running multiple services on the same server. On AlmaLinux 9, Docker runs stably and is suitable for both testing environments and production systems.

Guide

Docker is a popular container platform that helps package and deploy applications in isolated environments. Instead of manually installing all libraries and dependencies for each application, Docker allows you to package the application with its required components into a container for fast, consistent deployment across multiple servers.

If you are usingVPS or Server running AlmaLinux 9, installing Docker is very suitable for deploying websites, APIs, databases, n8n, Node.js applications, Python, Java, monitoring, or microservices systems.

In this article,VPTSwill guide you on how toinstall Docker on AlmaLinux 9 from A to Z, including Docker Engine, Docker Compose, Docker Buildx, and how to verify Docker after installation.

1. What is Docker?

Docker is a platform that allows packaging applications along with their necessary libraries and components intocontainer.

Instead of manually configuring the entire environment every time you deploy an application to another VPS or server, Docker provides a consistent, easily manageable runtime environment.

Common use cases for Docker:

Deploy websites and web applications.
Run APIs or backends.
Deploy databases.
Run automation systems.
Build development and testing environments.
Deploy multiple applications on the same VPS.
Use Docker Compose to manage multiple containers.

Docker Engine on Linux includes components such as Docker daemon, Docker CLI, and container runtime.

2. Docker Installation Guide

Step 1: Add Docker Repository

Docker CE is not installed directly from the default repository in this guide. Therefore, we will add the Docker Repository before proceeding with the installation.

dnf config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo

This is a required step for the system to download and install Docker.

Step 2: Install Docker

After the repository has been added successfully, proceed to install Docker Engine along with the necessary components:

dnf -y install docker-ce --nobest

Main packages include:

docker-ce: Docker Engine.
docker-ce-cli: Docker command-line tool.
containerd.io: container runtime.
docker-buildx-plugin: plugin supporting Docker Buildx.
docker-compose-plugin: supports Docker Compose.

This is the set of Docker packages currently instructed for installation when using the RPM repository.

The installation process may take a few minutes depending on VPS speed and network connection.

Step 3: Start Docker

After installation is complete, activate Docker with the commands:

systemctl enable docker
systemctl start docker

Step 4: Check Docker status

After starting up, check if Docker is running using:

systemctl status docker

If it displaysactive (running)means Docker is working successfully.

Step 5: Verify Docker operation

You can test quickly by running a container:

docker run hello-world

If a success message appears → Docker installation is complete on your system.

2. Benefits of Using Docker on VPS

When deploying Docker on a VPS atVPTS, you will receive:

Deploy applications quickly
Consistent runtime environment
Isolate applications, increase security
Easily scale systems

Frequently asked questions

Can multiple containers run on the same VPS?

Yes. Docker allows running multiple containers on the same VPS. Each container can handle an individual service such as Nginx, MySQL, Redis, Node.js, or other applications.

Is Docker on AlmaLinux 9 suitable for running websites?

Yes. Docker can be used to deploy many types of websites and applications such as WordPress, Nginx, Apache, PHP, Node.js, Laravel, or other web systems.

CONCLUSION

Through the articleDetailed Guide to Installing Docker on AlmaLinux 9, VPTSguided you step by step from updating the system, adding Docker Repository, installing Docker Engine to verifying Docker operations on the VPS.

After successful installation, you can use Docker to deploy websites, applications, APIs, databases, or many other services more quickly and conveniently.

We hope this article helps you easily install and use Docker on AlmaLinux 9. During the process, if you encounter errors or need assistance with VPS, servers, and infrastructure services, you can contactVPTSfor support.

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