Internally, container images have a layered structure, with each layer representing a filesystem diff produced by a corresponding RUN, COPY, or ADD instruction in its Dockerfile. However, when a container is created from an image, its filesystem appears as a standard Linux directory structure. Usually, it's a responsibility of the runtime to mount the image layers as a container filesystem, but sometimes, a need to manually extract the packaged filesystem into a local folder may arise. In particular, this may be useful for debugging purposes.

In this challenge, you will need to unpack the filesystem of a container image into a local directory. Make sure you don't use docker save - it dumps the original layered structure of the image!

The image is already pulled for you - you can find it in the output of the docker images command. Store its filesystem in the ~/imagefs directory. Ah, and the image is not really runnable, so you may need to be a bit creative.