Config => Fix readonly bug

AssignmentChecker/src/config/Config.ts

@@ -13,11 +13,11 @@ class Config {
         project: string; resultsVolume: string; resultsDojo: string; resultsExercise: string;
     };
 
-    public readonly assignment!: {
+    public assignment!: {
         name: string; secret: string;
     };
 
-    public readonly dockerhub!: {
+    public dockerhub!: {
         repositories: {
             assignmentChecker: string
         }
@@ -27,7 +27,7 @@ class Config {
 
     async init() {
         this.appName = process.env.APP_NAME || '';
-        
+
         const apiUrl = process.env.API_URL ?? '';
 
         await ClientsSharedConfig.init(apiUrl);