Blocking external traffic to OMV UI on the built in nginx

I'm hosting a docker service on my OMV that is meant to have public access. I previously had set the OMV UI to a separate port so that I could set a public facing nginx container that would proxy to my service to listen on 80 and 443.

This works okay enough but requires some redundant stuff (two nginxes mainly) also stops working if docker is down. I would rather just modify the built in nginx to handle the public service traffic. I would add these rules to /etc/nginx/sites-available/openmediavault-webgui in the `location` block:

```

allow 10.23.0.0/24;

allow fd73::/16;

deny all;

satisfy all;

```

And then add my public service to conf.d

But of course OMV will overwrite this file periodically and remove that, exposing my OMV to the world.

Is there a way I can add those rules and keep it consistent even after an overwrite?

I figured as much, thought it was worth asking anyway. Thanks for responding.