Program.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.Extensions.PlatformAbstractions;

namespace ConsoleApp1
{
    public class Program
    {
        public static IServiceProvider ServiceProvider { get; private set; }

        public Program(IServiceProvider serviceProvider)
        {
            ServiceProvider = serviceProvider;
        }

        static void Main(string[] args)
        {
            var a = PlatformServices.Default; // works
            
            // ServiceProvider == nulls, so throwing
            var re = ServiceProvider.GetService(typeof(IRuntimeEnvironment)) as IRuntimeEnvironment;        //for operating system, architecture and runtime info
            var ae = ServiceProvider.GetService(typeof(IApplicationEnvironment));    //for application path, name, version, configuration info
        }
    }
}

project.json

{
  "version": "1.0.0-*",
  "description": "ConsoleApp1 Console Application",
  "authors": [ "Oliver" ],
  "tags": [ "" ],
  "projectUrl": "",
  "licenseUrl": "",

  "compilationOptions": {
    "emitEntryPoint": true
  },

  "dependencies": {
    "Microsoft.Extensions.DependencyInjection.Abstractions": "1.0.0-rc1-final",
    "Microsoft.Extensions.PlatformAbstractions":  "1.0.0-rc1-final"
  },

  "commands": {
    "ConsoleApp1": "ConsoleApp1"
  },

  "frameworks": {
    "dnxcore50": {
      "dependencies": {
        "Microsoft.CSharp": "4.0.1-beta-23516",
        "System.Collections": "4.0.11-beta-23516",
        "System.Console": "4.0.0-beta-23516",
        "System.Linq": "4.0.1-beta-23516",
        "System.Threading": "4.0.11-beta-23516"
      }
    }
  }
}