Teddycloud with Cloudflare Tunnel

I am hosting teddycloud on my pc in a docker container but i would like to be able to access the teddycloud from anywhere. Cloudflare Tunnel (Cloudflare Tunnel · Cloudflare Zero Trust docs) seems great for that but it doesnt seem to work with the toniebox.
i point my desired address “teddycloud.domain.name” to the ipinmynetwork:443 of the tonicloud server but it doesnt work.
anyone got any ideas?