Check necessary configs

src/configfilemanager.h

@@ -43,6 +43,12 @@ public:
             configs.insert(std::make_pair(splited.at(0), splited.at(1)));           
         }
 
+        if (configs.count("NEXTCLOUD_CONTAINER_NAME") == 0)
+        {
+            std::cerr << "The container's name not added" << std::endl;
+            exit(EXIT_FAILURE);
+        }
+
         std::cout << "Config file loaded successfuly" << std::endl;
     }