dotnet new worker

<Project Sdk="Microsoft.NET.Sdk.Worker">
  <PropertyGroup>
    <TargetFramework>netcoreapp3.0</TargetFramework>
    <UserSecretsId>dotnet-MyWorkerServiceApp-B76DB08E-FFBB-4AD1-89B5-93BF483D1BD0</UserSecretsId>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="Microsoft.Extensions.Hosting" Version="3.0.0-preview8.19405.4" />
  </ItemGroup>
</Project>

namespace MyWorkerServiceApp
{
    public class Program
    {
        public static void Main(string[] args)
        {
            CreateHostBuilder(args).Build().Run();
        }

        public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args)
                .ConfigureServices((hostContext, services) =>
                {
                    services.AddHostedService<Worker>();
                });
    }
}

    public class Worker : BackgroundService
    {
        private readonly ILogger<Worker> _logger;

        public Worker(ILogger<Worker> logger)
        {
            _logger = logger;
        }

        protected override async Task ExecuteAsync(CancellationToken stoppingToken)
        {
            while (!stoppingToken.IsCancellationRequested)
            {
                _logger.LogInformation("Worker running at: {time}", DateTimeOffset.Now);
                await Task.Delay(1000, stoppingToken);
            }
        }
    }

public static IHostBuilder CreateHostBuilder(string[] args) => 
            Host.CreateDefaultBuilder(args) 
                .UseWindowsService() 
                .ConfigureServices((hostContext, services) => 
                { 
                   //services.AddHttpClient(); 
                   services.AddHostedService<Worker>(); 
                });

private static Container defaultContainer()
        {
            var container = new Container(ioc =>
            {
                // map same interface to different concrete classes
                ioc.For<IUser>().Use<EFUserService>();
                ioc.For<IUnitOfWork>().HybridHttpOrThreadLocalScoped().Use<ApplicationDBContext>();
            });
            container.AssertConfigurationIsValid();

            return container;
        }

.HybridHttpOrThreadLocalScoped()