Previously, I explained how you can install Docker in Ubuntu with multiple methods but what if you no longer want to have Docker installed in your system?

Sure, you can use sudo apt remove docker but it won't remove the configuration, containers, images, and volumes.

And this guide covers all!

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How to uninstall Docker from Ubuntu

In this tutorial, I will walk you through the following sections:

• Removing Docker images, containers, configuration files, and volumes
• Uninstalling Docker packages
• Deleting Docker files from the system

So let's start with the first one.

Uninstall Docker images, containers, and volumes

Let's start by removing containers.

1. Removing Docker containers

First, stop the running containers using the following command:

docker stop $(docker ps -a -q)

Here, the $(docker ps -a -q) part will list all the running and stopped containers and will pass them to the docker stop command to stop all the running containers.

Once done, you can remove them using the following:

docker rm $(docker ps -a -q)

That's it!

2. Removing Docker images

To remove Docker images, all you have to do is execute the following command:

docker rmi $(docker images -a -q)

Like the previous command, the $(docker images -a -q), lists all the images including both active and intermediate images, and then passes them to the docker rmi command to them.

3. Remove all Docker networks

If you wish to remove all the custom networks from Docker, then execute the following command:

docker network prune

4. Remove cache and volumes

The command that I am about to show you is very powerful and removes multiple unnecessary files at once including:

• Stopped containers
• Networks that are not used by at least one container
• Images that are not associated with at least one container
• Build cache

To do so, execute the following command:

docker system prune -a

Uninstall Docker packages

To remove every Docker package including compose plugin, buildx-plugin, and more, you have to execute one command and it will take care of all:

sudo apt remove docker-* --auto-remove

Here, the --auto-remove flag will remove dependencies of Docker and is no longer required.

And that's all it takes to remove the Docker package from your system.

Remove leftover Docker files

Just removing the package is not enough. There are some files that are yet to be removed and have to be done manually.

All the Docker files are located inside the /var/lib/docker directory. Use the following command to remove it:

sudo rm -rf /var/lib/docker

Next, remove the Docker group:

sudo groupdel docker

Now, remove the Docker socket using the given command:

sudo rm -rf /var/run/docker.sock

If you have Docker Compose installed, then, use the following command for the complete removal:

sudo rm -rf /usr/local/bin/docker-compose && sudo rm -rf /etc/docker && sudo rm -rf ~/.docker

That's it! Docker including all the files has been uninstalled from your system.

To verify the uninstallation, you can execute the docker command and it should give you the following error:

docker

Looking for Docker alternatives? Here you go

If Docker wasn't good enough, there are multiple containerization solutions with different sets of features, and can be your next install.

To make things simple, we made a dedicated guide on Docker alternatives for your containerization needs:

Docker Alternatives for Your Containerization Needs

Docker has become synonymous to containers. But it is not the only containerization tool out there. Take a look at these Docker alternatives.

Linux HandbookPratham Patel

I hope you will find this guide helpful.