configuration: Release
platform: Any CPU

environment:
  DOTNET_CLI_TELEMETRY_OPTOUT: 1

configuration: Release
platform: Any CPU

environment:
  DOTNET_CLI_TELEMETRY_OPTOUT: 1

before_build: nuget.exe restore
Add a before_build step of installing required packages.
Add a before_build step of installing required packages.

Seems Appveyor doesn't do it automatically
