version: '3'
services:
  consul-server-1:
    image: consul:1.15
    command: |
      consul agent -ui -server -bootstrap-expect=3 -data-dir=/consul/data -client=0.0.0.0
    volumes:
      - ./consul-data-1:/consul/data
    ports:
      - 8500:8500
      - 8600:8600/udp

  consul-server-2:
    image: consul:1.15
    command: |
      consul agent -server -retry-join=consul-server-1 -data-dir=/consul/data -client=0.0.0.0
    volumes:
      - ./consul-data-2:/consul/data
    ports:
      - 8501:8500
      - 8601:8600/udp
    depends_on:
      - consul-server-1

  consul-server-3:
    image: consul:1.15
    command: |
      consul agent -server -retry-join=consul-server-1 -data-dir=/consul/data -client=0.0.0.0
    volumes:
      - ./consul-data-3:/consul/data
    ports:
      - 8502:8500
      - 8602:8600/udp
    depends_on:
      - consul-server-1
  
  app-1:
    build:
      context: ./app
    ports:
      - 5001:5000
    environment:
      CONSUL_HOST: consul-server-1
      MY_HOST: app-1
  
  app-2:
    build:
      context: ./app
    ports:
      - 5002:5000
    environment:
      CONSUL_HOST: consul-server-2
      MY_HOST: app-2
  
  app-3:
    build:
      context: ./app
    ports:
      - 5003:5000
    environment:
      CONSUL_HOST: consul-server-3
      MY_HOST: app-3