I suspect you have a port that it is served on. If that is the case if you install the Jupyter server proxy along with it in your repo, you can use the proxy port in the URL to open the correct page. At least that is what has been my experience in the past, like what is discussed in this thread.
I think once you know it works, you can somehow customize the server proxy for your app and use URLs that handle the port behind the scenes to make appropriate entrypoints but I haven’t done any of that myself yet. I believe it is covered in the Jupyter server proxy documentation.