fix: wait for config file validation

src/app.ts

@@ -36,6 +36,7 @@ import {Elasticsearch} from './storage/elasticsearch/Elasticsearch';
 
 export const app = express();
 
+async function configureApp() {
   // only accept json as content type for all requests
   app.use(bodyParser.json({
     limit: '500kb',
@@ -59,8 +60,8 @@ const databases: {[name: string]: DatabaseConstructor} = {
   };
 
   // validate config file
-export const scValidator = new Validator();
-scValidator.addSchemas(join('node_modules', '@openstapps', 'core', 'lib', 'schema'));
+  const scValidator = new Validator();
+  await scValidator.addSchemas(join('node_modules', '@openstapps', 'core', 'lib', 'schema'));
 
   // validate the config file
   const configValidation = scValidator.validate(config.util.toObject(), 'SCConfigFile');
@@ -156,3 +157,10 @@ app.use((_req, res) => {
   });
 
   // TODO: implement a route to register plugins
+}
+
+configureApp().then(() => {
+  logger.ok('Sucessfully configured express server');
+}).catch((err) => {
+  throw err;
+});