Install Docker on Fedora 40: A Step-by-Step Guide

Are you curious about installing Docker on Fedora 40? This guide will take you through every step for a smooth setup. First, make sure your system is ready for Docker. Then, follow the steps to install and verify Docker Engine. When moving to Docker, remove any old Docker versions to keep your data safe. It’s best to use Docker’s official repositories for installation. But, you can also use RPM packages if you’re in a place with no internet.

For more help, check the official Docker documentation.

Key Takeaways

• Ensure your system meets the official prerequisites, specifically compatibility with Fedora 39 or Fedora 40.
• Uninstall older Docker versions to protect existing data like images, containers, volumes, and networks.
• Leverage Docker’s official repositories for a smooth installation process.
• Options like RPM packages offer flexibility for restricted environments.
• Verify successful installation by running the hello-world image, while being aware of potential sudo privileges.

Prerequisites for Docker Installation on Fedora 40

Before starting the Install Docker Fedora 40 guide, make sure you know what you need. Having a strong base is key for a smooth setup.

System Requirements

First, your Fedora OS must be current, with versions 39 or 40 recommended. Keeping your software updated ensures compatibility and access to new features. A well-maintained Fedora setup also helps Docker run smoothly without problems.

Uninstalling Older Versions

It’s important to remove old Docker versions to prevent issues. You’ll need to uninstall any previous versions, like docker or docker-engine. But, be careful with Docker resources like images and volumes in

to keep your data safe. For more help, check the official Docker documentation.

If Docker was installed before, here’s how to remove it properly:

1. Uninstall the old docker or docker-engine packages.
2. Make sure all Docker files in

   1	/var/lib/docker/

   are backed up or deleted.

Following these steps will help you install Docker cleanly, reducing errors and setup problems.

Setting Up Docker Repository on Fedora 40

Setting up a Docker repository on Fedora 40 is key for a smooth Docker installation. It involves updating your system, installing plugins, and configuring repositories.

Install dnf-plugins-core

The first step is to install the dnf-plugins-core package. This package helps manage repository settings and lets us add the Docker CE repository. To install it, use the command:

1
sudo dnf install dnf-plugins-core

This installs the core plugin package. It allows us to add repositories like Docker CE.

Add Docker CE Repository

Next, we configure the Docker CE repository. We add the Docker repository to our system by running:

1
sudo dnf config-manager --add-repo https://download.docker.com/linux/fedora/docker-ce.repo

This command lets Fedora 40 get Docker package updates and dependencies from the Docker CE repository. Setting up this repository is key for Setting up Docker on Fedora. It makes installations smooth and consistent.

Install Docker Engine, CLI, and containerd

With the repository set, we install Docker Engine, CLI, and containerd. These are vital for Docker’s functionality. Use the command:

1
sudo dnf install docker-ce docker-ce-cli containerd.io

This installs Docker Engine, its CLI, and the containerd runtime. It’s important to do this right to ensure Docker is installed correctly on Fedora 40. This sets the stage for efficient Docker use.

Install and Use Docker on Fedora 40

First, make sure the Docker repository is set up right on Fedora 40. Then, start the Docker Engine and verify the installation. These steps are key to making sure Docker is ready and can be used without extra permissions.

Starting Docker Service

After installing, start the Docker service to begin using the Docker Engine. Use this command:

. To make Docker start automatically when you boot, use:

.

Verifying the Docker Installation

Next, in the Fedora 40 Docker tutorial, run a simple container to check if everything installed correctly. Just type:

. This command downloads the “hello-world” image and runs it, proving Docker is set up right. If all goes well, you’ll see a “Hello from Docker!” message.

Running Docker as a Non-Privileged User

It’s a big plus to run Docker without needing root access for better security. Add your user to the Docker group with:

. Then, log out and back in to make the change take effect. This lets you use Docker without extra permissions, making things easier and safer. For more on using Docker without issues, check out the tutorial on how to SSH into Docker container.

By following these steps, you’ll get Docker up and running smoothly on Fedora 40. This makes for a strong Docker setup.

Managing Docker Containers and Images on Fedora 40

Managing Docker containers and images on Fedora 40 needs a good plan. Using Docker on Fedora 40, you can run different apps in containers. Here’s how to make your Docker setup better.

First, let’s talk about Docker container management Fedora 40. We’ll cover important tasks like making, running, and stopping containers. For example, to start a new container, use this command:

1
docker run -it --name mycontainer fedora:40

This starts a new container from the official Fedora 40 image. To see all active containers, use:

1
docker ps

For Fedora 40 Docker image handling, knowing how to get and manage Docker images is key. Pull an image from Docker Hub with:

1
docker pull fedora:40

To see the images you’ve downloaded, use:

1
docker images

Handling data in Docker containers is important. Volumes help keep data safe even if a container is deleted. To make and use a volume, do this:

1
docker volume create myvolume

To link this volume to a container:

1
docker run -d -v myvolume:/data mycontainer

Security is crucial. Adding users to the docker group makes Docker safer and lets them use Docker commands without being root. Here’s how to add a user:

1
sudo usermod -aG docker $USER

After doing this, log out and back in for the changes to work.

For beginners with using Docker on Fedora 40, learning about container orchestration helps a lot. It lets you manage many containers at once. Using tools like Docker Compose also makes it easier to set up services across containers.

Conclusion

Exploring the Fedora 40 Docker configuration has been a detailed journey. We’ve looked at every key part, from checking system needs and setting up Docker repositories to installing the Docker Engine and CLI. These steps lay a strong base for Docker setup, letting you efficiently manage and run containers.

It’s also vital to know how to keep Docker running smoothly after installation. Making sure Docker starts right and checking the install is key for smooth running. Running Docker as a non-privileged user boosts security and makes managing users easier, which is key for a strong Docker setup.

In the end, knowing how to handle Docker containers and images lets you use Docker fully for customization and growth. Docker changes how we develop and run applications, making it a must-have in today’s tech world. By using this guide, you’ve made big strides in getting the hang of Docker on Fedora.

Source Links

• https://developer.fedoraproject.org/tools/docker/docker-installation.html
• https://docs.docker.com/engine/install/fedora/
• https://docs.docker.com/desktop/install/fedora/

• About the Author
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Mark

Mark is a senior content editor at Text-Center.com and has more than 20 years of experience with linux and windows operating systems. He also writes for Biteno.com

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