docker-compose.yml

# Set docker-compose version
version: '3'

services:
  postgres:
    container_name: postgres
    ports:
      - "5432:5432"
    volumes:
      - $HOME/postgres-data:/var/lib/postgresql
    image: postgres:9.6.9

  elasticsearch:
    container_name: elasticsearch
    ports:
      - "9200:9200"
    volumes:
      - $HOME/elasticsearch/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml
      - $HOME/elasticsearch/data:/usr/share/elasticsearch/data
    links:
      - postgres
    image: elasticsearch:5.2.1

  redis:
    container_name: redis
    ports:
      - "6379:6379"
    links:
      - postgres
    image: redis:5.0-rc

  web:
    container_name: web
    build: .
    ports:
      - "3000:3000"
    command: /bin/sh -c "rails s -b 0.0.0.0 -p 3000"
    volumes:
      - .:/app
    depends_on:
      - postgres
      - redis
      - elasticsearch
# Environment variables that allow my app to find other services
    environment:
      REDISTOGO_URL: "redis://redis:6379"
      POSTGRES_USER: postgres
      POSTGRES_HOST: postgres
      ELASTICSEARCH_URL: "http://elasticsearch:9200"