string "traefik" in other labels trigger faulty traefik label analysis routine

[DerDaehne]

if a container has a label containing the string "traefik" on it, lander will go ahead and will try to find the (non-existing) route.
to reproduce the issue, start traefik and lander via docker-compose, expose treafik's dashboard on port 80, disable https.
set lander.group at traefik to something like "traefik dashboard" and exclude :80.
open browser to see 2 traefik link. one pointing to the dashboard at port 8080, the other pointing to "https://hostname.local/" (with "hostname.local" as the configured hostname of the machine)