draft create on dotnet core web api cannot run generated Dockerfile

[DaleBingham]

I ran "draft create --pack=csharp" and then "draft up" and it fails on the Dockerfile used, which seem like a valid Dockerfile. I have several just like it. The output is below from the logs.

Step 1/14 : FROM microsoft/dotnet:2.1-sdk AS builder
2018/12/26 15:42:30 error while building: Error parsing reference: "microsoft/dotnet:2.1-sdk AS builder" is not a valid repository/tag: invalid reference format

[DaleBingham]

I am running Minishift 3.11 on MAC OSX latest.

And I can run "docker pull microsoft/dotnet:2.1-sdk"

[bacongobbler]

What is the output of docker version?

[DaleBingham]

Client: Docker Engine - Community
Version: 18.09.0
API version: 1.39
Go version: go1.10.4
Git commit: 4d60db4
Built: Wed Nov 7 00:47:43 2018
OS/Arch: darwin/amd64
Experimental: false

Server: Docker Engine - Community
Engine:
Version: 18.09.0
API version: 1.39 (minimum version 1.12)
Go version: go1.10.4
Git commit: 4d60db4
Built: Wed Nov 7 00:55:00 2018
OS/Arch: linux/amd64
Experimental: true

[DaleBingham]

I am on a Mac OS X latest updates