Your development machine has many Docker images, but some are no longer used for active projects. To free up disk space, which command would help you clean up unused Docker images?

$1$ point

Use docker ps to list all running containers and manually remove their associated images.

Ignore unused images, as they won't affect the functionality of active containers.

Run docker image prune to identify and remove unused images.

Write a script to iterate through all images and compare them to running containers, deleting any unmatched images.