Honestly this is a duplicate of Use cached blacklist on startup to improve startup times
Basically, why can't we have an option to remove this load on startup of the Docket container...? no need for a log there... just try and reboot a pihole Docker image.
Having additional blocklists to the defaults is common, and having to reload them on start is useless if I am for example rebooting my machine for testing changes or whatever. This process costs 20 seconds on my machine, in which time I have no DNS. We could have an opt-in option for that...
Using PiHole as a primary and only DNS and having to wait until the lists are loaded to have the DNS service up is a bit mess.