Docker compose configuration for testing a nodejs app container

docker-compose.yml

test:
  image: "${APP_IMAGE}"
  links:
    - es
    - redis

  environment:
    - NODE_ENV=test
    - ES_HOST=es
    - REDIS_HOST=redis

  command: |
    /bin/sh -c "
      export REDIS_PORT=$$REDIS_PORT_6379_TCP_PORT
      export ES_PORT=$$ES_PORT_9200_TCP_PORT
      npx mocha --exit --require babel-register --no-colors ./src/test/*.js
    "

es:
  image: elasticsearch:2.3.5
  command: elasticsearch -Des.http.compression=true -Des.http.cors.enabled=true -Des.http.cors.allow-origin="*" -Des.script.inline=true -Des.script.indexed=true
  ports:
    - "9234:9200"
  environment:
    - ES_HEAP_SIZE=500M
  container_name: es

redis:
  image: redis:alpine
  ports:
    - "5387:6379"
  container_name: redis