read configuration from custom path

config.py

@@ -6,18 +6,22 @@
 from typing import Any
 
 
-class Config:
+class Config:  # pylint: disable=too-few-public-methods
     """
     Configuration for the application
     """
 
+    DEFAULT_CONFIG_PATH = "config.json"
+
     data: dict[str, Any]
     _instance = None
 
-    def __new__(cls):
+    def __new__(cls, config_path: str = DEFAULT_CONFIG_PATH):
         # Singleton pattern
         if cls._instance is None:
             cls._instance = super(Config, cls).__new__(cls)
-            with open("config.json", encoding="utf-8") as file:
+            if not config_path:
+                config_path = cls.DEFAULT_CONFIG_PATH
+            with open(config_path, encoding="utf-8") as file:
                 cls._instance.data = json.load(file)
         return cls._instance

main.py

@@ -67,9 +67,19 @@ def choose_component_from_release(rel: NovaRelease) -> Optional[NovaComponent]:
         """,
     )
 
+    parser.add_argument(
+        "--config-path",
+        type=str,
+        required=False,
+        help="""
+        The path to configuration file, optional.
+        If not specified, the config.json file in the current directory will be used.
+        """,
+    )
+
     args = parser.parse_args()
 
-    config = Config()
+    config = Config(args.config_path)
 
     ji = JiraIntegration(
         config.data["jira"]["host"],