NativeCommandLine.csproj

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net7.0</TargetFramework>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
	  <PublishAot>true</PublishAot>
	  <IlcDisableReflection>true</IlcDisableReflection>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="System.CommandLine" Version="2.0.0-beta4.22272.1" />
  </ItemGroup>

</Project>

Program.cs

using System.CommandLine;

namespace NativeCommandLine
{
    internal class Program
    {
        static async Task Main(string[] args)
        {
            var fileOption = new Option<FileInfo?>(
                name: "--file",
                description: "The file to read and display on the console.");

            var rootCommand = new RootCommand("Sample app for System.CommandLine");
            rootCommand.AddOption(fileOption);

            rootCommand.SetHandler((file) =>
                {
                    Console.WriteLine("Reading " + file!);
                },
                fileOption);

            await rootCommand.InvokeAsync(args);
        }
    }
}