Due to how Docker images work (and their underlying base OS layers), upgrading a licensed image with the standard 6-digit key will typically trip the license system and you’ll have to re-activate. The leased activation model (like what is used for Maker Edition today) is being actively worked on to enable standard edition 8-digit activations to be generated and used in containerized environments. I don’t have details on the timeframes, but I can tell you there is movement here.