Server/src/main.ts

import { NestFactory } from "@nestjs/core";
import { AppModule } from "./app.module";
import {
	FastifyAdapter,
	NestFastifyApplication,
} from "@nestjs/platform-fastify";

async function bootstrap() {
	const app = await NestFactory.create(AppModule, new FastifyAdapter());

	app.enableCors({
		origin: "*",
	});

	await app.listen(process.env.PORT ?? 3000, "0.0.0.0");
}
bootstrap();