Use golang:windowsservercore

windows/registry/part-1.md

@@ -22,7 +22,7 @@ The Dockerfile for the registry builder is in [Dockerfile.builder](Dockerfile.bu
 
 ```Dockerfile
 # escape=`
-FROM golang:nanoserver
+FROM golang:windowsservercore
 SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop';"]
 ```
 
@@ -97,4 +97,4 @@ The Docker image for the registry running on Nano Server is 310MB compressed and
 
 ## Next
 
-- [Part 2 - Running a Registry Container](part-2.md)
+- [Part 2 - Running a Registry Container](part-2.md)