Clarify that manual dnsChallenge provider works only when run as docker run -it
Clarify that manual dnsChallenge provider works only when run as docker run -it


mmatur/traefik,vdemeester/traefik,FriggaHel/traefik,containous/traefik,containous/traefik,vdemeester/traefik,ldez/traefik,FriggaHel/traefik,vdemeester/traefik,FriggaHel/traefik,mmatur/traefik,containous/traefik,mmatur/traefik,dtomcej/traefik,SantoDE/traefik,dtomcej/traefik,dtomcej/traefik,FriggaHel/traefik,vdemeester/traefik,SantoDE/traefik,mmatur/traefik,SantoDE/traefik,SantoDE/traefik,containous/traefik,dtomcej/traefik,ldez/traefik,ldez/traefik,ldez/traefik