Traefik & multiple docker-compose projects

project.docker-compose.yml

version: '3'

services:
  nginx:
    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.provys-transformer.rule=Host(`www.example.com`)"
      - "traefik.http.routers.provys-transformer.tls=true"
    networks:
      - traefik
      - default

  fpm:
    environment:
      SSH_AUTH_SOCK: $SSH_AUTH_SOCK
    volumes:
      - $SSH_AUTH_SOCK:$SSH_AUTH_SOCK
      - composer:/home/www-data/.composer

  db:
    volumes:
      - db:/data/db
    ports:
      - 27017:27017

  mq:
    hostname: "mq"
    volumes:
      - mq:/var/lib/rabbitmq
    ports:
      - 5672:5672
      - 15672:15672

volumes:
  db:
  composer:
  mq:

networks:
  traefik:
    external:
      name: traefik_proxy

traefik.docker-compose.yml

version: '3'

services:
  reverse-proxy:
    # The official v2.0 Traefik docker image
    image: traefik:v2.0
    # Enables the web UI and tells Traefik to listen to docker
    command: --api.insecure=true
    ports:
      # The HTTP port
      - "80:80"
      - "443:443"
      # The Web UI (enabled by --api.insecure=true)
      - "8080:8080"
    volumes:
      # So that Traefik can listen to the Docker events
      - /var/run/docker.sock:/var/run/docker.sock
      # Mount current directory including all configuration files, certificates, etc.
      - ./:/etc/traefik

networks:
  default:
    external:
      name: traefik_proxy

traefik.traefik.toml

[api]
dashboard = true
insecure = true

[entryPoints]
    [entryPoints.http]
    address = ":80"

    [entryPoints.websecure]
    address = ":443"

[providers]
  [providers.file]
  filename = "/etc/traefik/dynamic_conf.toml"
  watch = true

  [providers.docker]
  endpoint = "unix:///var/run/docker.sock"
  defaultRule = "Host(`{{ normalize .Name }}.example.com`)"
  exposedByDefault = false