What command is used to clean up dangling images in Docker?

What command is used to clean up dangling images in Docker?

• A. docker remove
• B. docker image clean
• C. docker image prune
• D. docker cleanup

Answer: (C)

The command used to clean up dangling images in Docker is "docker image prune." This command specifically targets unused images that are not associated with any containers, often referred to as "dangling images." When you execute this command, Docker will remove these images, freeing up disk space and decluttering your environment. The operation is efficient because it only removes images that are no longer needed, ensuring that your storage remains organized and manageable. Additionally, "docker image prune" can also be enhanced with flags to remove all unused images, not just the dangling ones, offering flexibility depending on the level of cleanup desired. Understanding how to manage images effectively is crucial for optimizing storage and maintaining performance within your Docker setup.

The command used to clean up dangling images in Docker is "docker image prune." This command specifically targets unused images that are not associated with any containers, often referred to as "dangling images." When you execute this command, Docker will remove these images, freeing up disk space and decluttering your environment. The operation is efficient because it only removes images that are no longer needed, ensuring that your storage remains organized and manageable.

Additionally, "docker image prune" can also be enhanced with flags to remove all unused images, not just the dangling ones, offering flexibility depending on the level of cleanup desired. Understanding how to manage images effectively is crucial for optimizing storage and maintaining performance within your Docker setup.