I recently installed Rustdesk on a new DietPi installation and initially seemed to have success running the install script shown above. However there are implications if you intend to use Rustdesk outside the LAN and do not have a static IP address. These implications are not addressed unless you first run ./install.sh --help and then use the proper options to configure your servers or if you edit the signal server startup options after installation. My post discussing this is quite long and can be found here: Rustdesk new installation and configuration.