Traefik v1.7 + KeyCloak (RaspberryPi)

Hi,
I have Traefik v1.7.24-alpine working on a raspberry pi 4, with duckDNS provider.

I also have KeyCloak container working (dedicated rpi-keycloak).

I want add a traefik-forward-auth, but i can't get it to wokr under raspberry. I want some container like funkypenguin/traefik-forward-auth working under armhf

Someone have on ARMHF something like that working???