Which command is used to remove Docker images?

The command used to remove Docker images is indeed "docker rmi." This command directly instructs the Docker engine to remove an image from the local Docker registry. The syntax typically requires the image name or the image ID, and it flags to ensure the image is deleted properly.

Other options mentioned do not apply to image removal in Docker. For instance, "docker rm" is used to remove containers, not images. Similarly, "docker delete" and "docker remove" do not exist as valid Docker commands, making "docker rmi" the only correct choice for deleting images in Docker. Understanding this command is essential for managing Docker images effectively, allowing users to free up space and maintain a clean development environment.