Set up traefik reverse proxy in docker-compose services

docker-compose.yml

version: "3.9"

services:

  prometheus:
    image: prom/prometheus:v2.28.1
    volumes:
      - ./prometheus.yml:/etc/prometheus/prometheus.yml
 
  cadvisor:
    image: gcr.io/cadvisor/cadvisor:v0.37.5 
    volumes:
      - /:/rootfs:ro
      - /var/run:/var/run:rw
      - /sys:/sys:ro
      - /var/lib/docker/:/var/lib/docker:ro

  grafana:
    image: grafana/grafana:8.1.1
    labels:
      - traefik.http.routers.grafana.rule=Host(`grafana.localhost`)
      - traefik.http.services.grafana-docker-monitoring.loadbalancer.server.port=3000
    environment:
      - HTTP_USER=admin
      - HTTP_PASS=admin

  reverse-proxy:
    image: traefik:v2.4
    command: --api.insecure=true --providers.docker
    ports:
      - 80:80
      - 8080:8080
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock:ro

  webapp:
    image: nginx:alpine
    labels:
      - traefik.http.routers.webapp.rule=Host(`www.localhost`)