Linux puskom-ProLiant-DL385-Gen10 5.4.0-150-generic #167~18.04.1-Ubuntu SMP Wed May 24 00:51:42 UTC 2023 x86_64

/etc/firefox/pref/

//etc/firefox/pref/apturl.js

pref("network.protocol-handler.app.apt","/usr/bin/apturl"); pref("network.protocol-handler.warn-external.apt",false); pref("network.protocol-handler.app.apt+http","/usr/bin/apturl"); pref("network.protocol-handler.warn-external.apt+http",false); pref("network.protocol-handler.external.apt",true); pref("network.protocol-handler.external.apt+http",true);