I hostes searxng on portainer but I still can’t seem to access http://mydomainname/20054/

Also portainer doesn’t show any Published Ports (it shows 20054:8080 for a very short period when I start the stack and then disappeared)

version: "3.7"

services:
  # caddy:
  #   container_name: caddy
  #   image: docker.io/library/caddy:2-alpine
  #   network_mode: host
  #   restart: unless-stopped
  #   volumes:
  #     - /volume1/SN/Docker/searxng-stack/Caddyfile:/etc/caddy/Caddyfile:ro
  #     - caddy-data:/data:rw
  #     - caddy-config:/config:rw
  #   environment:
  #     # - SEARXNG_HOSTNAME=${SEARXNG_HOSTNAME:-http://localhost/}
  #     - SEARXNG_TLS=${LETSENCRYPT_EMAIL:-internal}
  #   cap_drop:
  #     - ALL
  #   cap_add:
  #     - NET_BIND_SERVICE
  #   logging:
  #     driver: "json-file"
  #     options:
  #       max-size: "1m"
  #       max-file: "1"

  redis:
    container_name: redis
    image: docker.io/valkey/valkey:8-alpine
    command: valkey-server --save 30 1 --loglevel warning
    restart: unless-stopped
    networks:
      - searxng
    volumes:
      - valkey-data2:/data
    cap_drop:
      - ALL
    cap_add:
      - SETGID
      - SETUID
      - DAC_OVERRIDE
    logging:
      driver: "json-file"
      options:
        max-size: "1m"
        max-file: "1"

  searxng:
    container_name: searxng
    image: docker.io/searxng/searxng:latest
    restart: unless-stopped
    networks:
      - searxng
    ports:
      # - "127.0.0.1:8080:8080"
      - "20054:8080"
    volumes:
      - /volume1/SN/Docker/searxng-stack/searxng:/etc/searxng:rw
    environment:
      # - SEARXNG_BASE_URL=https://${SEARXNG_HOSTNAME:-localhost}/
      - SEARXNG_BASE_URL=http://mydomainname/20054/
      - UWSGI_WORKERS=${SEARXNG_UWSGI_WORKERS:-4}
      - UWSGI_THREADS=${SEARXNG_UWSGI_THREADS:-4}
    cap_drop:
      - ALL
    cap_add:
      - CHOWN
      - SETGID
      - SETUID
    logging:
      driver: "json-file"
      options:
        max-size: "1m"
        max-file: "1"

networks:
  searxng:

volumes:
  # caddy-data:
  # caddy-config:
  valkey-data2:

thx a lot!