Use useStaticAssets instead of @nestjs/serve-static

`serve-static` does not work with `createTestingModule` and is not recommended when "just" serving a few images.

See https://github.com/nestjs/serve-static/issues/240

Signed-off-by: David Mehren <git@herrmehren.de>

src/main.ts

@@ -1,11 +1,12 @@
 import { ValidationPipe } from '@nestjs/common';
 import { NestFactory } from '@nestjs/core';
+import { NestExpressApplication } from '@nestjs/platform-express';
 import { DocumentBuilder, SwaggerModule } from '@nestjs/swagger';
 import { AppModule } from './app.module';
 import { NestConsoleLoggerService } from './logger/nest-console-logger.service';
 
 async function bootstrap() {
-  const app = await NestFactory.create(AppModule);
+  const app = await NestFactory.create<NestExpressApplication>(AppModule);
   const logger = await app.resolve(NestConsoleLoggerService);
   logger.log('Switching logger', 'AppBootstrap');
   app.useLogger(logger);
@@ -24,6 +25,10 @@ async function bootstrap() {
       transform: true,
     }),
   );
+  // TODO: Get uploads directory from config
+  app.useStaticAssets('uploads', {
+    prefix: '/uploads',
+  });
   await app.listen(3000);
   logger.log('Listening on port 3000', 'AppBootstrap');
 }