screenjob/service_host/ScreenJob.WindowsServiceHost/Program.cs

using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using ScreenJob.WindowsServiceHost;

var options = ServiceOptions.Parse(args);

Host.CreateDefaultBuilder(args)
    .UseWindowsService(serviceOptions =>
    {
        serviceOptions.ServiceName = "ScreenJobBackend";
    })
    .ConfigureServices(services =>
    {
        services.AddSingleton(options);
        services.AddHostedService<BackendProcessService>();
    })
    .Build()
    .Run();