.net core 5.0 使用hosting.json 配置发布程序端口

1 修改Program.cs 如下

    public class Program
    {
        public static void Main(string[] args)
        {
            // Create the Serilog logger, and configure the sinks
            Log.Logger = new LoggerConfiguration()
               .MinimumLevel.Debug() // 最小日志级别，即如果最小日志级别为 Error 则下面的 Log.Information 不会记录日志
               .MinimumLevel.Override("Microsoft", LogEventLevel.Warning)
               .MinimumLevel.Override("Microsoft.AspNetCore", LogEventLevel.Warning)
               .Enrich.FromLogContext()
               .WriteTo.Console()
               .WriteTo.File(formatter: new CompactJsonFormatter(), "logs\\serilog.txt", rollingInterval: RollingInterval.Day)
               .CreateLogger();
            // Wrap creating and running the host in a try-catch block
            try
            {
                Log.Information("Starting host");
                CreateHostBuilder(args).Build().Run();
            }
            catch (Exception ex)
            {
                Log.Fatal(ex, "Host terminated unexpectedly");
            }
            finally
            {
                Log.CloseAndFlush();
            }
        }

        public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args)
             .ConfigureHostConfiguration(configHost =>
             {
                 configHost.AddJsonFile("hosting.json", optional: true);
             })
            .ConfigureWebHostDefaults(webBuilder =>
            {
                webBuilder.UseStartup<Startup>();
            })
            .UseSerilog(dispose: true);
    }