As part of the changes in #1832, the SDK images for Alpine and Nano were changed to be based on the ASP.NET image. The SDK layer explicitly installs only the SDK bits that do not exist in the base layers. There needs to be a test which validates these SDK images to verify that the dotnet directory's contents match what exists in the SDK .zip/.tar file. This will ensure that all the necessary bits exist in the image and there wasn't an error in how files are being extracted.