[Libreqos v1.4] installer problems on Debian 11 in LXC

[interduo]

I tried to run:
apt install libreqos on Debian 11 in LXC container on Proxmox

Installer problems on Debian 11

    create a virtual environment using python3 -m venv path/to/venv.
    Then use path/to/venv/bin/python and path/to/venv/bin/pip. Make
    sure you have python3-full installed.

    If you wish to install a non-Debian packaged Python application,
    it may be easiest to use pipx install xyz, which will manage a
    virtual environment for you. Make sure you have pipx installed.

    See /usr/share/doc/python3.11/README.venv for more information.

note: If you believe this is a mistake, please contact your Python installation or OS distribution provider. You can override this, at the risk of breaking your Python installation or OS, by passing --break-system-packages.
hint: See PEP 668 for the detailed specification.
/var/lib/dpkg/info/libreqos.postinst: line 37: sudo: command not found
                          LibreQoS 1.4 Setup Assistant

/etc/lqos.confdoes not exist, building one.
Which Network Interface faces the INTERNET?
Available Interfaces
eth0 - Ethernet
eth0

additionally You cannot break this instalation script (without killing from another terminal) whitch is problematic
lastly i found in clean envirnoment:
emtpy file in /opt/libreqos with -rw-r--r-- 1 root root 0 Dec 6 17:17 '='

So:

1. We should check if there is root logged in - if yes then not use sudo - it's not useful
   OR we should add requirement for sudo package for libreqos.deb.
2. Please add abbility to break instalation script during install.
   I suggest printing:
   Installing LibreQoS is done, now please run configuration script /opt/libreqos/configurelibreqos.sh
   instead of running it script automaticly by /bin/bash /var/lib/dpkg/info/libreqos.postinst configure