Make listen port configurable

Iceshrimp.Backend/Startup.cs

@@ -43,4 +43,9 @@ app.MapFallbackToPage("/Shared/FrontendSPA");
 
 if (app.Environment.IsDevelopment()) app.UseViteDevMiddleware();
 
+var instanceConfig = app.Configuration.GetSection("Instance");
+
+app.Urls.Clear();
+app.Urls.Add($"http://{instanceConfig["WebDomain"]}:{instanceConfig["ListenPort"]}");
+
 app.Run();

Iceshrimp.Backend/configuration.ini

@@ -1,11 +1,14 @@
-AllowedHosts=*
-
-[Logging:LogLevel]
-Default=Information
-Microsoft.AspNetCore=Warning
+[Instance]
+ListenPort=3000
+WebDomain=shrimp.example.org
+AccountDomain=example.org
 
 [Database]
 Host=localhost
 Database=iceshrimp
 Username=iceshrimp
-Password=iceshrimp
+Password=iceshrimp
+
+[Logging:LogLevel]
+Default=Information
+Microsoft.AspNetCore=Warning