add space url in dockerfile

app.py

@@ -16,9 +16,11 @@ logger = logging.getLogger(__name__)
 
 app = Flask(__name__)
 
-redirect_uri = os.getenv("REDIRECT_URI", "https://multitransformer-tonic-discharge-guard.hf.space/auth/callback")
+# Set SPACE_URL from environment variable or default to the correct Space URL
+SPACE_URL = os.getenv("SPACE_URL", "https://multitransformer-tonic-discharge-guard.hf.space")
+REDIRECT_URI = f"{SPACE_URL}/auth/callback"
 CALLBACK_MANAGER = CallbackManager(
-    redirect_uri=redirect_uri,
+    redirect_uri=REDIRECT_URI,
     client_secret=None,
 )