improve: port management

angular.json

@@ -84,7 +84,7 @@
         "serve": {
           "builder": "@angular-devkit/build-angular:dev-server",
           "options": {
-            "port": 4200
+            "port": 3000
           },
           "configurations": {
             "production": {

docker-compose.yml

@@ -10,4 +10,4 @@ services:
     dns:
       - 192.168.100.2
     ports:
-      - ${MAIN_PORT}:${MAIN_PORT}
+      - ${MAIN_PORT}:3000

src/server.ts

@@ -38,8 +38,7 @@ app.get('**', (req: Request, res: Response, next: NextFunction): void => {
 });
 
 if (isMainModule(import.meta.url)) {
-  const envPort: number = Number.parseInt(process.env['MAIN_PORT'] ?? '', 10);
-  const port: number = Number.isFinite(envPort) ? envPort : 3000;
+  const port: number = 3000;
 
   app.listen(port, (): void => {
     console.log(`Listening on port ${port}`);