traefik-stack.yaml

version: '3'

services:
  reverse-proxy:
    image: traefik:v2.2
    command:
      - --api.insecure=true
      - --api.dashboard=true
      - --providers.docker=true
      - --providers.docker.swarmMode=true
      - --providers.docker.exposedbydefault=false
      - --providers.docker.network=proxy
      - --entrypoints.http.address=:80
      - --entrypoints.https.address=:443
    ports:
      # The HTTP port
      - "80:80"
      - "443:443"
    volumes:
      # So that Traefik can listen to the Docker events
      - /var/run/docker.sock:/var/run/docker.sock
    networks:
      - proxy
    deploy:
      placement:
        constraints:
          - node.role == manager
      labels:
        - "traefik.enable=true"
        - "traefik.http.routers.api.rule=Host(`dashboard.traefik.localhost`)"
        - "traefik.http.routers.api.service=api@internal"
        - "traefik.http.routers.api.entrypoints=http"
        - "traefik.http.services.api.loadbalancer.server.port=80"
networks:
  proxy:
    external: true

whoami-stack.yaml

version: '3'

services: 
   whoami:
    # A container that exposes an API to show its IP address
    image: containous/whoami
    networks:
      - proxy
    deploy:
      labels:
        - "traefik.http.routers.whoami.rule=Host(`whoami.localhost`)"
        - "traefik.enable=true"
        - "traefik.http.routers.whoami.entrypoints=http"
        - "traefik.http.services.whoami.loadbalancer.server.port=80"

networks:
  proxy:
    external: true