Problem expose port on Path

Hello,
I try expose a Port from Docker Container on a Path with Traefik 2:

I use Docker-compose withn Traefik, the Container mm2 run on Port 8088.
I will expose this container under the name localhost/mm2 .
But it doesn't work :frowning:
Error: 404 Not Found

Publish the Container on a subdomain like mm2.localhost works.

My Config:

Trafik

version: '3'

services:
  traefik:
    # The official v2 Traefik docker image
    image: traefik:v2.2
    # Enables the web UI and tells Traefik to listen to docker
    command: 
    #- "--log.level=DEBUG"
      - "--api.insecure=true"
      - "--providers.docker=true"
      - "--providers.docker.exposedbydefault=false"
      - "--entrypoints.web.address=:80"

    hostname: "traefik"
    ports:
      # The HTTP port
      - "80:80"
      - "443:443"
      # The Web UI (enabled by --api.insecure=true)
      - "58080:8080"
    volumes:
      # So that Traefik can listen to the Docker events
      - /var/run/docker.sock:/var/run/docker.sock

    networks:
      - default
      - adsbnet

Container

mm2:
    build: .
    tty: true
    container_name: mm2
    restart: always
    hostname: "mm2"
    depends_on:
      - dump1090m
    ports:
      - 8088:8088
    networks:
      - adsbnet
    command:
      - --inConnectId=dump1090m:30005:ADSB
      - --web=8088
    volumes:
      - /home/pi/adsb/mm2/distances.json:/distances.json
      - /home/pi/adsb/mm2/Basestation.sqb:/Basestation.sqb 
    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.mm2.rule=(Host(`localhost`) && Path(`/mm2`))" # not Working
      #- "traefik.http.routers.mm2.rule=Path(`/mm2`)" # not Working
      #- "traefik.http.routers.mm2.rule=Host(`mm2.localhost`)" # Works
      - "traefik.docker.network=adsbnet"
      - "traefik.http.services.mm2.loadbalancer.server.port=8088"

The whoami with Port 80 und Path works :-(
 whoami:
    image: "containous/whoami"
    container_name: "simple-service"
    labels:
      - "traefik.enable=true"
      - "traefik.docker.network=adsbnet"
      - "traefik.http.routers.whoami.rule=Path(`/whoami`)"
      - "traefik.http.routers.whoami.entrypoints=web"
    networks:
      - adsbnet

That's wrong?
Kind Regards
Flightliner

When using the rule Host(`mm2.localhost`) do you still have /mm2 as part of the url ?