@@ -153,6 +153,13 @@

 # The number of build steps below are explicitly minimised to improve performance.

+

+# Extremely important - do not change the following line to reference a "specific" image, 

+# such as `mcr.microsoft.com/windows/servercore:ltsc2019`. If using this Dockerfile in process

+# isolated containers, the kernel of the host must match the container image, and hence

+# would fail between Windows Server 2016 (aka RS1) and Windows Server 2019 (aka RS5).

+# It is expected that the image `microsoft/windowsservercore:latest` is present, and matches

+# the hosts kernel version before doing a build. 

 FROM microsoft/windowsservercore

 # Use PowerShell as the default shell