In this article, we will review the docker rmi command in Docker. Docker is a versatile platform that allows us to run applications in separate containers. By using Docker, we can easily and effectively manage different environments for our applications. Now, if you need to remove a Docker image, you can use the docker rmi command.
The docker rmi command provides us with the ability to delete Docker images that we no longer need. This action helps free up system disk space and prevents additional unnecessary space usage. You can remove one or several images simultaneously. In this case, before deleting the images, you must ensure that the images are not associated with any running containers. Otherwise, Docker will not allow you to remove them.
In general, this command is designed to be simple, but for more effective use, you should be familiar with its syntax. For example, you can remove images using their identifier or name. Let's go through an example.
Usually, when working with Docker, after completing work with an image, you may end up with the result that it is no longer needed. Therefore, you can use docker rmi to directly remove it. Let's take a look at some usage examples of this command.
docker rmi image_id
docker rmi image_name
docker rmi -f image_id
Code Explanation
In the commands above, you can observe that we have 3 different methods for deleting images:
docker rmi image_idThis command removes the image specified by
image_id.docker rmi image_nameHere, you can use the image name to remove it.
docker rmi -f image_idThis version of the command includes the
-f flag, which tells Docker to remove the image even if it is being used by one or more containers. This action should be done with caution as it may cause issues for the containers currently in use.