使用Autofac时，如何在ASP.NET核心中解析特定的键控服务？

public IServiceProvider ConfigureServices(IServiceCollection services)
{
    // 添加Autofac
    var containerBuilder = new ContainerBuilder();
    containerBuilder.Populate(services);
    var container = containerBuilder.Build();
    return new AutofacServiceProvider(container);
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env, IServiceProvider serviceProvider)
{
    // 解析特定的键控服务
    var specificService = serviceProvider.GetRequiredService<ISpecificService>();
    // 使用特定的键控服务
    // ...
}

var containerBuilder = new ContainerBuilder();
containerBuilder.RegisterType<SpecificService>().Keyed<ISpecificService>(typeof(SpecificService));
var container = containerBuilder.Build();