Script install failure on Ubuntu

[Teebor-Choka]

As per instruction in the official documentation and in order to work around the issue in #641 , I opted out for a manual installation of a cloud-init ubuntu:noble using the install script as documented here: https://docs.dappnode.io/docs/user/install/script . The prerequisite install fails.

Describe the bug
The prerequisite install fails when looking for the /etc/network/interfaces file, because that file has not been present in Ubuntu since the introduction of netplan in 18.04. The prerequisite installation failure prohibits direct installation of DAppNode on any Ubuntu machine. The update script needs to be modified to not use the /etc/network/interfaces, but rather a standard command, e.g. ip a readily available in the Ubuntu distribution.

To Reproduce

1. provision a cloud-init minimal ubuntu:noble machine
2. run the prerequisite install with sudo wget -O - https://prerequisites.dappnode.io | sudo bash

Expected behavior
The installation succeeds.

DAppNode version:

• OS: Ubuntu 24.04.1 LTS

Additional context
The easy fix could be quick, just needs a little bit of testing.