use Systemd on ASP.NET Core 6.0 and 7.0 and 8.0

if you want host your asp app on linux with systemd in ASP.NET Core 5 : you must add Microsoft.Extensions.Hosting.Systemd nuget package with this configuration:

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

        public static IHostBuilder CreateHostBuilder(string[] args)
        {
            return Host.CreateDefaultBuilder(args)
                .UseSystemd() <----------------------- HERE
                .ConfigureWebHostDefaults(webBuilder =>
                {
                    webBuilder.UseStartup<Startup>(); 
                }) ;
        }
    }

but what about ASP.NET Core 6.0 & 7.0 & 8.0?

in ASP.NET Core 6.0 & 7.0 & 8.0:

using Microsoft.Extensions.Hosting.Systemd;
//....
var builder = WebApplication.CreateBuilder(args);
builder.Host.UseSystemd();  <=-----------------------HERE