Use opencloud as webDAV for backup GrapheneOS

[zero0n3]

hi

my idea would be this:

install opencloud on raspberry pi in LAN (not accessible from the outside except via VPN) and use it as a webDAV server to perform backups of the mobile phone on which GrapheneOS is installed and which uses webdav to backup settings and apps.

I installed the version of opencloud indicated in the docker compose local documentation.

I access the server

I create a user

I create a space for the user, and retrieve the webdav address

At that point I change the domain (inserting the IP of the raspberry instead of the domain) and load it into the phone settings (url + username + password) but every time I get the 404 error.

And it is the same that I get if I connect to that address from a PC. If instead I use the DNS indicated in the guide, on the PC I can but on the mobile phone, not being able to force the DNS by routing it to the IP of the raspberry, no.

How can I then use the raspberry IP instead of the domain name on opencloud?

thanks