Update env management

config.py

@@ -8,7 +8,7 @@ load_dotenv()  # Loads variables from .env into environment
 
 def get_env_var(name: str) -> str:
     value = os.getenv(name)
-    if value is None:
+    if value is None or value == "":
         raise EnvironmentError(f"Missing required environment variable: {name}")
     return value
 
@@ -18,3 +18,4 @@ AUTHORIZED_USER_ID = int(get_env_var("AUTHORIZED_USER_ID"))
 NTFY_AUTH_HEADER = get_env_var("NTFY_AUTH_HEADER")
 KUMA_API_PASSWORD = get_env_var("KUMA_API_PASSWORD")
 TORRENT_API_PASSWORD = get_env_var("TORRENT_API_PASSWORD")
+PORTAINER_API_KEY = get_env_var("PORTAINER_API_KEY")