switch to the SDK version of nanoserver

This now works from the command line.
But, sa password is wrong.

src/Services/Catalog/Catalog.API/Dockerfile.nanowin

@@ -1,4 +1,4 @@
-FROM microsoft/dotnet:1.1-runtime-nanoserver 
+FROM microsoft/dotnet:1.1-sdk-nanoserver 
 ARG source
 WORKDIR /app
 RUN set-itemproperty -path 'HKLM:\SYSTEM\CurrentControlSet\Services\Dnscache\Parameters' -Name ServerPriorityTimeLimit -Value 0 -Type DWord