public class MyServiceProvider : IServiceProvider, IDisposable
 {
 private IServiceProvider _innerServiceProvider;
 private Dictionary<Type, Type> _services;
 private List<IDisposable> _disposables;
 
 public MyServiceProvider(IServiceProvider innerServiceProvider)
 {
 _innerServiceProvider = innerServiceProvider;
 this._services = new Dictionary<Type, Type>();
 _disposables = new List<IDisposable>();
 }
 
 
 public MyServiceProvider Register<TFrom, TTo>() where TTo: TFrom, new()
 {
 _services[typeof(TFrom)] = typeof(TTo);
 return this;
 }
 
 public object GetService(Type serviceType)
 {
 Type implementation;
 if (_services.TryGetValue(serviceType, out implementation))
 {
 object service = Activator.CreateInstance(implementation);
 IDisposable disposbale = service as IDisposable;
 if (null != disposbale)
 {
  _disposables.Add(disposbale);
 }
 return service;
 }
 return _innerServiceProvider.GetService(serviceType);
 }
 
 public void Dispose()
 {
 (_innerServiceProvider as IDisposable)?.Dispose();
 foreach (var it in _disposables)
 {
 it.Dispose();
 }
 _disposables.Clear();
 }
 }

 public class Program
 {
 public static void Main(string[] args)
 {
 new WebHostBuilder()
 .UseKestrel()
 .UseStartup<Startup>()
 .Build()
 .Run();
 }
 }
 
 public class Startup
 {
 public IServiceProvider ConfigureServices(IServiceCollection services)
 {
 return new MyServiceProvider(services.BuildServiceProvider())
 .Register<IFoobar, Foobar>();
 }
 
 public void Configure(IApplicationBuilder app)
 {
 app.UseDeveloperExceptionPage()
 .Run(async context => await context.Response.WriteAsync(context.RequestServices.GetRequiredService<IFoobar>().GetType().Name));
 }
 }
 public interface IFoobar { }
 public class Foobar : IFoobar { }

 internal class ServiceScope : IServiceScope
 {
 private MyServiceProvider _serviceProvider;
 
 public ServiceScope(IServiceScope innserServiceScope, Dictionary<Type, Type> services)
 {
 _serviceProvider = new MyServiceProvider(innserServiceScope.ServiceProvider, services);
 }
 public IServiceProvider ServiceProvider
 {
 get { return _serviceProvider; }
 }
 
 public void Dispose()
 {
 _serviceProvider.Dispose();
 }
 }
 
 internal class ServiceScopeFactory : IServiceScopeFactory
 {
 private IServiceScopeFactory _innerServiceFactory;
 private Dictionary<Type, Type> _services;
 
 public ServiceScopeFactory(IServiceScopeFactory innerServiceFactory, Dictionary<Type, Type> services)
 {
 _innerServiceFactory = innerServiceFactory;
 _services = services;
 }
 public IServiceScope CreateScope()
 {
 return new ServiceScope(_innerServiceFactory.CreateScope(), _services);
 }
 }

 public class MyServiceProvider : IServiceProvider, IDisposable
{
 public MyServiceProvider(IServiceProvider innerServiceProvider, Dictionary<Type, Type> services)
 {
 _innerServiceProvider = innerServiceProvider;
 _services = services;
 _disposables = new List<IDisposable>();
 }
 
 public object GetService(Type serviceType)
 {
 if (serviceType == typeof(IServiceScopeFactory))
 {
 IServiceScopeFactory innerServiceScopeFactory = _innerServiceProvider.GetRequiredService<IServiceScopeFactory>();
 return new ServiceScopeFactory(innerServiceScopeFactory, _services);
 }
 ... 
 }
 ...
 }