Block Page Pi-hole V5?

Good day,

I am new to pi-hole and complete my first install today with docker,

I am trying to get a custom block page or redirect different url (one I can host) to work with pi-hole version 5.

Is there a way to do it? I tried the old (version 4 and below) suggestions (customblockingpage.php / pihole-FTL.conf etc) before noticing the version difference.

Any suggestions, Thanks