Removal of Foreign Layers from Windows Images

[mthalman]

Removal of Foreign Layers from Windows Images

As part of this month's servicing release, the .NET Windows-based images (Nano Server and Windows Server Core) will no longer include foreign layers. This means that when pushing a container image to a registry, all layers of the image will be pushed, including the layers of the base Windows image. Prior to this change, these images only carried a foreign layer link that directed to the base layer on Microsoft Artifact Registry (MAR, also known as MCR). After this change, when utilizing a Windows image, it will now carry the load of the base image instead of the link.

This affects all Windows-based images for all currently supported versions of .NET.

See the announcement from Windows Server for more information and to learn about the impacts of this change.