trying to get working in CI

appveyor.yml

@@ -1,3 +1,14 @@
 version: 1.0.{build}
-build:
-  verbosity: minimal
+configuration:
+- Debug
+- Release
+platform: Any CPU
+environment:
+  # Don't report back to the mothership
+  DOTNET_CLI_TELEMETRY_OPTOUT: 1
+init:
+- ps: $Env:LABEL = "CI" + $Env:APPVEYOR_BUILD_NUMBER.PadLeft(5, "0")
+before_build:
+- appveyor-retry dotnet restore -v Minimal
+build_script:
+- build.sh