gistfile1.txt

version: '3.8'

services:
  traefik:
    image: traefik:v2.10
    command:
      - "--api.insecure=true"
      - "--providers.docker=true"
      - "--providers.docker.swarmMode=true"
      - "--providers.docker.exposedbydefault=false"
      - "--providers.docker.network=traefik-public"
      - "--entrypoints.web.address=:80"
    ports:
      - "80:80"
      - "8080:8080"  # Traefik dashboard
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock:ro
    networks:
      - traefik-public
    deploy:
      placement:
        constraints:
          - node.labels.web ==  true

  httpbin:
    image: arnaudlacour/httpbin
    environment:
      GUNICORN_CMD_ARGS: "--capture-output --error-logfile - --access-logfile - --access-logformat '%(h)s %(t)s %(r)s %(s)s Host: %({Host}i)s}'"
    networks:
      - traefik-public
    deploy:
      placement:
        constraints:
          - node.labels.gateway == true
      labels:
        - "traefik.enable=true"
        - "traefik.http.routers.httpbin.rule=PathPrefix(`/`)"
        - "traefik.http.routers.httpbin.entrypoints=web"
        - "traefik.http.services.httpbin.loadbalancer.server.port=80"
        - "traefik.port=80"

networks:
  traefik-public:
    driver: overlay