abp/samples/MicroserviceDemo/applications/ConsoleClientDemo/Program.cs

using System.Threading.Tasks;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Serilog;
using Serilog.Events;

namespace ConsoleClientDemo
{
    internal class Program
    {
        static async Task Main(string[] args)
        {
            Log.Logger = new LoggerConfiguration()
                .MinimumLevel.Debug()
                .MinimumLevel.Override("Microsoft", LogEventLevel.Information)
                .Enrich.FromLogContext()
                .WriteTo.File("Logs/logs.txt")
                .CreateLogger();

            Log.Information("Starting ConsoleClientDemo...");

            await CreateHostBuilder(args).RunConsoleAsync();
        }

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