docker-compose.yml

version: "3.8"

services:
  reverse-proxy:
    # The official v2 Traefik docker image
    image: traefik:v2.10
    # Enables the web UI and tells Traefik to listen to docker
    command: --api.insecure=true --providers.docker
    ports:
      # The HTTP port
      - "80:80"
      # 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
  
  app_a:
      # A container that exposes an API to show its IP address
    image: node-web-app:1.0.0
    ports:
      - "13000:3000"
    labels:
      - traefik.http.routers.home.rule=Host(`app_a.localhost`)
      - traefik.http.services.app_a.loadbalancer.server.port=3000
    environment:
      - APP_NAME=app_a