Configuration for Traefik LXC

[kangaroo72]

Hi,
I'm new to Proxmox and used Traefik as docker-compose before.
My plan is to configure my services like Nextcloud (LXC), PLEX (LXC).... to reach via subdomains.
Can you please provide an example for a dynamic configuraiton?
I have read some docs, but I'm think I'm not a professional enough to handle it...
One example can be: https://traefik.domain.tld for the dashboard of traefik e. g.
Thank you!!