You‘re right, in the container they run on different ports. However, Traefik exposes all services on port 80 and forwards the requests according to a subpath.
Example:
<IP>:80/grafana/…
<IP>:80/piwigo/…
<IP>:80/api/…
Now the hue emulation of homeassistant would also need port 80 and I‘m pretty sure this can only work on a separate IP.
However, I‘ve got it to work with MacVlan, but included it directly into my docker-compose file:
In the homeassistant-service:
networks:
homeassistant-network:
ipv4_address: 192.168.1.11
And the network config:
networks:
homeassistant-network
driver: macvlan
driver_opts:
parent: eth0
ipam:
config:
- subnet: 192.168.1.0/24
gateway: 192.168.1.1 #Fritzbox-IP
ip_range: 192.168.1.11/32 #Homeassistant-IP