This issue will track when full windows 20H2 support will be back and we can publish those images to ACR. At the moment, we have provided images and corresponding dockerfiles for nanoservercore and windowsservercore 20H2 distributions but can't publish it to ACR.

An issue has been created on the ACR repo too: Azure/acr#532

Check list

• Verified that this is not a Known Issue
• Verified this is not an issues in the underlying windows container that should be reported to Windows Container User Voice