Samuel GAIST authored Jan 17, 2020 and Samuel GAIST committed Jan 17, 2020

The next release of BEAT environments will make use of docker
labels to provide the information the current describe command
returns (minus the os entry which is not currently used).

This new implementation of discovery uses these labels and thus
speeds up the process.

The original code is kept as a fallback method in case a node only
has images using the old build process.