v5.8

https://github.com/pi-hole/pi-hole/releases/tag/v5.3
https://github.com/pi-hole/pi-hole/releases/tag/v5.3.1

https://github.com/pi-hole/AdminLTE/releases/tag/v5.5

https://github.com/pi-hole/FTL/releases/tag/v5.8

Docker specific changes:

• Issue #824 - Don't log password #825 (@kylekurz)
• Feature: add debian bullseye #828 (@lightswitch05)
• Remove port 443 from templates and documentation. #806 (@dschaper)
• Move gravity on boot to a @reboot cron job #836 (@mdzw)
• Make test of IPv6 env variable case insensitive #823 (@limes007)
• Enable DHCP Server with environment variables #769 (@ignic)
• Check for validity of values passed in through PIHOLE_DNS_ #839 (@PromoFaux)
• Add support for the i386 architecture #818 (@static-void-main)

Tidied up readme a little