so one of my docker-compose file would like that:
- "traefik.frontend.rule=Host: backend1.dev.test.com"
This backend needs to speak to another backend, and this another can be on your machine (then it would like work perfectly without a chagne), or if it is not started on your machine it should fallback to
backend2.test.com (so no .dev in the domain name).
What I need is a modifier on the host part