some refactoring

MareSynchronosServer/MareSynchronosAuthService/Program.cs

@@ -0,0 +1,41 @@
+namespace MareSynchronosAuthService;
+
+public class Program
+{
+    public static void Main(string[] args)
+    {
+        var hostBuilder = CreateHostBuilder(args);
+        using var host = hostBuilder.Build();
+        try
+        {
+            host.Run();
+        }
+        catch (Exception ex)
+        {
+            Console.WriteLine(ex);
+        }
+    }
+
+    public static IHostBuilder CreateHostBuilder(string[] args)
+    {
+        using var loggerFactory = LoggerFactory.Create(builder =>
+        {
+            builder.ClearProviders();
+            builder.AddConsole();
+        });
+        var logger = loggerFactory.CreateLogger<Startup>();
+        return Host.CreateDefaultBuilder(args)
+            .UseSystemd()
+            .UseConsoleLifetime()
+            .ConfigureWebHostDefaults(webBuilder =>
+            {
+                webBuilder.UseContentRoot(AppContext.BaseDirectory);
+                webBuilder.ConfigureLogging((ctx, builder) =>
+                {
+                    builder.AddConfiguration(ctx.Configuration.GetSection("Logging"));
+                    builder.AddFile(o => o.RootPath = AppContext.BaseDirectory);
+                });
+                webBuilder.UseStartup(ctx => new Startup(ctx.Configuration, logger));
+            });
+    }
+}