Startup.cs

using System;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;

namespace SHKube
{
    public class Startup
    {

        public IHostingEnvironment HostingEnvironment { get; private set; }
        public IConfiguration Configuration { get; private set; }

        public Startup(IConfiguration configuration, IHostingEnvironment env)
        {
            this.HostingEnvironment = env;
            this.Configuration = configuration;
        }

        // This method gets called by the runtime. Use this method to add services to the container.
        // For more information on how to configure your application, visit https://go.microsoft.com/fwlink/?LinkID=398940
        public void ConfigureServices(IServiceCollection services)
        {
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }

            app.Run(async (context) =>
            {
                await context.Response.WriteAsync(Configuration["Message"]);
                await context.Response.WriteAsync(Environment.MachineName);
            });
        }
    }
}