docker-compose.yml

version: '3.9'

services:
  reverse-proxy:
    # The official v2 Traefik docker image
    image: traefik:v2.4
    # Enables the web UI and tells Traefik to listen to docker
#    command: --api.insecure=true --log.Level=DEBUG --metrics.prometheus=true --providers.docker
    command: 
      - "--log.Level=DEBUG"
      - "--api.insecure=true"
      - "--metrics.prometheus=true"
      - "--providers.docker"
    ports:
      # The HTTP port
      - "80:80"
      - "8081:8081"
      # 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
    networks:
      - traefik
  prometheus:
    image: prom/prometheus:v2.24.1
    container_name: prometheus
    volumes:
      - ./prometheus/:/etc/prometheus
    command:
      - '--config.file=/etc/prometheus/prometheus.yml'
      - '--storage.tsdb.path=/prometheus'
    ports:
      - "9090:9090"
    labels:
      - "traefik.enable=false"
      - "traefik.backend=prometheus"
      - "traefik.prometheus.rule=Host:prometheus.docker.localhost"
      - "traefik.port=9090"
    networks:
      - traefik
  post_app:
    build: ./post_app
    environment:
      - app_instances=10
    labels: 
      - "traefik.enable=true"
      - "traefik.http.routers.post_app.service=post-app-traefik" 
      - "traefik.port=8081"    
    networks:
      - traefik 
  whoami:
    # A container that exposes an API to show its IP address
    image: traefik/whoami
    deploy:
      replicas: 10
    labels:
      - "traefik.enable=true"
      - "traefik.backend=whoami"
      - "traefik.http.routers.whoami-get.rule=Method(`GET`) && Path(`/login`)"
      - "traefik.http.routers.whoami-get.service=whoami-traefik"
      - "traefik.http.routers.whoami-post.rule=Method(`POST`) && Path(`/register`) || Method(`POST`) && Path(`/changePassword`)"
      - "traefik.http.routers.whoami-post.service=post-app-traefik"
      - "traefik.http.routers.whoami.middlewares=whoami-get-rl,whoami-post-rl,whoami-eh,whoami-post-rewrite"
      - "traefik.http.middlewares.whoami-get-rl.ratelimit.average=1000"
      - "traefik.http.middlewares.whoami-post-rl.ratelimit.average=100"
      - "traefik.http.middlewares.whoami-eh.retry.initialinterval=10ms"
      - "traefik.http.middlewares.whoami-eh.retry.attempts=100"
      - "traefik.http.middlewares.whoami-post-rewrite.redirectregex.regex=^http://localhost/changePassword"
      - "traefik.http.middlewares.whoami-post-rewrite.redirectregex.replacement=http://localhost:8081/changePassword"
      - "traefik.http.middlewares.whoami-post-rewrite.redirectregex.permanent=true"
    networks:
      - traefik

networks:
  traefik:
    driver: bridge
    ipam:
      config:
        - subnet: 192.168.16.0/24