How do you remove all stopped containers?

The method to remove all stopped containers is through the command "docker container prune." This command effectively cleans up resources that are no longer in use, specifically targeting stopped containers. When you run this command, Docker automatically identifies all containers that are not in a running state and removes them, freeing up system resources.

This command is particularly useful because it streamlines the process of container management by allowing users to delete all stopped instances with a single command rather than having to manually identify and remove each container individually. This not only saves time but also reduces the likelihood of human error in selecting and removing containers.

The other options would not successfully achieve the same result. For example, "docker remove stopped" would not be a recognized command, and "docker cleanup containers" is not a valid Docker command. "docker remove --all" suggests the removal of all containers but does not specifically target only the stopped ones, which could potentially lead to data loss if any running containers are inadvertently removed. Thus, "docker container prune" stands out as the precise and correct choice for this action.