Fix Windows FROMs

Author: tianon

3.4/windows/windowsservercore-ltsc2016/Dockerfile

@@ -1,4 +1,4 @@
-FROM microsoft/windowsservercore:ltsc2016
+FROM mcr.microsoft.com/windows/servercore:ltsc2016
 
 SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop';"]
 

3.6/windows/windowsservercore-ltsc2016/Dockerfile

@@ -1,4 +1,4 @@
-FROM microsoft/windowsservercore:ltsc2016
+FROM mcr.microsoft.com/windows/servercore:ltsc2016
 
 SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop';"]
 

4.0/windows/windowsservercore-1809/Dockerfile

@@ -1,4 +1,4 @@
-FROM microsoft/windowsservercore:1809
+FROM mcr.microsoft.com/windows/servercore:1809
 
 SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop';"]
 

4.0/windows/windowsservercore-ltsc2016/Dockerfile

@@ -1,4 +1,4 @@
-FROM microsoft/windowsservercore:ltsc2016
+FROM mcr.microsoft.com/windows/servercore:ltsc2016
 
 SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop';"]
 

4.2/windows/windowsservercore-1809/Dockerfile

@@ -1,4 +1,4 @@
-FROM microsoft/windowsservercore:1809
+FROM mcr.microsoft.com/windows/servercore:1809
 
 SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop';"]
 

4.2/windows/windowsservercore-ltsc2016/Dockerfile

@@ -1,4 +1,4 @@
-FROM microsoft/windowsservercore:ltsc2016
+FROM mcr.microsoft.com/windows/servercore:ltsc2016
 
 SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop';"]
 

Dockerfile-windows.template

@@ -1,4 +1,4 @@
-FROM microsoft/windowsservercore:placeholder
+FROM mcr.microsoft.com/windows/servercore:placeholder
 
 SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop';"]
 

update.sh

@@ -141,7 +141,7 @@ for version in "${versions[@]}"; do
 				-e 's/^(ENV MONGO_VERSION) .*/\1 '"$windowsVersion"'/' \
 				-e 's!^(ENV MONGO_DOWNLOAD_URL) .*!\1 '"$windowsLatest"'!' \
 				-e 's/^(ENV MONGO_DOWNLOAD_SHA256) .*/\1 '"$windowsSha256"'/' \
-				-e 's!^FROM .*!FROM microsoft/'"${winVariant%%-*}"':'"${winVariant#*-}"'!' \
+				-e 's!^(FROM .+):.+!\1:'"${winVariant#*-}"'!' \
 				Dockerfile-windows.template \
 				> "$version/windows/$winVariant/Dockerfile"