<Project Sdk="Microsoft.NET.Sdk.Web">
  <PropertyGroup>
    <TargetFramework>netcoreapp2.1</TargetFramework>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="Microsoft.AspNetCore.App" Version="2.1.4" />
    <PackageReference Include="Serilog.AspNetCore" Version="2.1.1" />
    <PackageReference Include="Serilog.Sinks.RollingFile" Version="3.3.0" />

public class Program
{
    public static int Main(string[] args)
    {
        Log.Logger = new LoggerConfiguration()
       .MinimumLevel.Debug()
       .MinimumLevel.Override("Microsoft", LogEventLevel.Information)
       .Enrich.FromLogContext()
       .WriteTo.RollingFile("logs/log-{Date}.txt")
       .CreateLogger();
 
        try
        {
            Log.Information("Starting web host");
            BuildWebHost(args).Run();
            return 0;
        }
        catch (Exception ex)
        {
            Log.Fatal(ex, "Host terminated unexpectedly");
            return 1;
        }
        finally
        {
            Log.CloseAndFlush();
        }
 
    }
 
    public static IWebHost BuildWebHost(string[] args) =>
          WebHost.CreateDefaultBuilder(args)
          .UseStartup<Startup>()
              .UseSerilog() // <-- Add this line
              .Build();
 
}