I have a folder on my in my home folder called containers symlinked to /etc/containers/systemd with my .container files. This is my jellyfin.container for using the Nvidia Quadro on my server.
Install firmware-atheros package to get rid of the firmware errors. The x509 stuff is a known thing with older Acers. If you have secure boot enabled, you can turn it off to see if it goes away, it's harmless otherwise.
Thanks!