NetCoreConfigSerilog

public static class Program
{
    public static void Main(string[] args)
    {
        var host = new WebHostBuilder()
            .UseKestrel()
            .UseIISIntegration()
            .UseContentRoot(Directory.GetCurrentDirectory())
            .UseStartup<Startup>()
            .ConfigureAppConfiguration((context, configBuilder) =>
            {
                configBuilder
                    .SetBasePath(context.HostingEnvironment.ContentRootPath)
                    .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
                    .AddJsonFile($"appsettings.{context.HostingEnvironment.EnvironmentName}.json", optional: true)
                    .AddEnvironmentVariables();

                Log.Logger = new LoggerConfiguration()
                    .ReadFrom.Configuration(configBuilder.Build())
                    .CreateLogger();
            })
            .ConfigureLogging((context, loggingBuilder) =>
            {
                loggingBuilder.AddSerilog(dispose: true);
            })
            .Build();

        host.Run();
    }
}