Update docker-compose.yml

traefik api dashboard run on localhost

examples/traefik/docker-compose.yml

@@ -6,7 +6,7 @@ services:
     ports:
       - 80:80 # HTTP
       - 443:443 # HTTPS
-      - 8080:8080 # MGMT WEB UI
+      - 127.0.0.1:8080:8080 # MGMT WEB UI
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock:ro # ro = read-only access to the docker.sock
       - ${DOCKER_VOLUME_STORAGE:-/mnt/docker-volumes}/traefik:/etc/traefik/ # put the provided traefik.yml and fileConfig.yml files at this location