✨ Add port env variable (#19)

src/app.module.ts

@@ -22,6 +22,7 @@ import { UpdatesModule } from './updates/updates.module';
         JELLYFIN_AUTHENTICATION_USERNAME: Joi.string().required(),
         JELLYFIN_AUTHENTICATION_PASSWORD: Joi.string().required(),
         UPDATER_DISABLE_NOTIFICATIONS: Joi.boolean(),
+        PORT: Joi.number().min(1),
       }),
     }),
     ScheduleModule.forRoot(),

src/main.ts

@@ -4,6 +4,6 @@ import { AppModule } from './app.module';
 async function bootstrap() {
   const app = await NestFactory.create(AppModule);
   app.enableShutdownHooks();
-  await app.listen(3000);
+  await app.listen(process.env.PORT || 3000);
 }
 bootstrap();