shell quoting

Dockerfile

@@ -26,8 +26,7 @@ CMD pixi run jupyter-lab \
   --port 7860 \
   --no-browser \
   --allow-root \
-  --ServerApp.tornado_settings="{'headers': {'Content-Security-Policy': 'frame-ancestors *'}}" \
-  --ServerApp.cookie_options="{'SameSite': 'None', 'Secure': True}" \
+  --ServerApp.tornado_settings='{"headers": {"Content-Security-Policy": "frame-ancestors *"}}' \
   --ServerApp.disable_check_xsrf=True \
   --LabApp.news_url=None \
   --LabApp.check_for_updates_class="jupyterlab.NeverCheckForUpdate" \