Container management and image handling are part of modern Linux automation practices covered in CompTIA Linux+ V8. Docker images are stored in container registries such as Docker Hub, and administrators commonly need to download images to deploy containers.
The correct command for downloading an image from a Docker repository is docker image pull. This command retrieves the specified image from a configured container registry and stores it locally. When no tag is specified, Docker automatically pulls the latest available version of the image. Therefore, docker image pull debian downloads the most recent Debian image from Docker Hub.
The other options are incorrect. docker image init is not a valid Docker command and does not exist in Docker’s CLI. docker image import is used to create a Docker image from a tarball file, not to download an image from a repository. docker image save exports an existing local image into a tar archive and does not retrieve images from a remote registry.
Linux+ V8 documentation emphasizes understanding container image lifecycles, including pulling, tagging, and running images. Pulling images is a foundational step before container execution and automation workflows.
Therefore, the correct answer is B. docker image pull debian.
