Docker image MAINTAINER Author field containes tmp.<RandomString>

[WhisperingChaos]

A bug in docker 1.8 would prevent deletion of an image if a container included a layer referencing an image's topmost layer even though the container was derived from another image that was different but included this same image layer.

To advert this problem, the initial SCRATCH image, used when creating an image's first layer is differentiated by executing MAINTAINER $(basename $(mktemp -u)) resulting in a unique top image layer for each image created by the dkrcp.

As a workaround, use the --change 'MAINTAINER <MaintainerName>' to set the Author field to a desired value.

This workaround strictly applies to Docker 1.8. In derivative Docker versions, dkrcp doesn't execute the MAINTAINER instruction, therefore, the Author field is unassigned.