E2E - docker-compose

docker-compose.ci.yml

version: '2'                                       # Version of composer
services:
  backend:                                         # Backend container
    build:
      context: ~/backend                           # Backend should be pulled by git to this location
      dockerfile: docker/Dockerfile.e2e            # The location of Dockerfile, relative to context above
    depends_on:                                    # The containers below will be resolved and loaded before backed
      - redis
      - postgres
      - frontend
      - selenium
      - elasticsearch
    ports:
      - "5001:5001"                                # Expose host_port:container_port
    volumes:
      - "/rspec_output:/app/rspec_output"          # Mount  /rspec_output (on host) to /app/rspec_output (in container)
    environment:
      - RAILS_ENV=e2e                              # This env var will be available to any container instance - used to run rspec in e2e env
      - RAILS_MASTER_KEY                           # If no value is passed this var is going to be read from machine ENV - very useful. Just set RAILS_MASTER_KEY for secrets in CircleCI build config page
    networks:                                      # Virtual network for containers
      main:                                        # Name of the network
        aliases:
          - backend                                # Alias for reference purposes
    command: bash -c "bash /app/docker/e2e.sh"     # Start container by a bash script (container will be alive as long as this script is running)
  frontend:                                        # Frontend container
    build:
      context: .
      dockerfile: Dockerfile.e2e
    command: nginx
    logging:                                       # Disable spamming irrelevant messages from this container
      driver: none
    networks:
      main:
        aliases:
          - frontend                               # Container name in virtual network that can be addressed
    ports:
      - "3000:3000"
    volumes:                                       # Used to mount ./tmp on machine to /app/dist in container
      - "./tmp:/app/dist"
  selenium:                                        # Selenium container
    image: selenium/standalone-chrome
    ports:
      - "4444:4444"
    logging:                                       # Disable spamming irrelevant messages from this container
      driver: none
    networks:
      main:
        aliases:
          - selenium                               # Container name in virtual network that can be addressed
  elasticsearch:                                   # Elasticsearch container (not required) - we used it in project
    image: docker.elastic.co/elasticsearch/elasticsearch:5.5.1
    volumes:
      - "~/es_data:/usr/share/elasticsearch/data"
    environment:
      - "xpack.security.enabled=false"
      - "transport.host=localhost"                 # This line might be needed to disable errors with circleCI 1.0 container memory amount
      - "bootstrap.system_call_filter=false"       # This line might be needed to disable errors with circleCI 1.0 container memory amount
    ports:
      - "9300:9300"
    logging:                                       # Disable spamming irrelevant messages from this container
      driver: none
    networks:
      main:
        aliases:
          - elasticsearch                          # Container name in virtual network that can be addressed
  postgres:                                        # Postgres container
    image: postgres:9.5                            # Postgres version, installed from image on Docker Hub
    environment:
      - POSTGRES_PASSWORD=password                 # There can't be 'blank' password, use one specified in database.e2e.yml
    logging:                                       # Disable spamming irrelevant messages from this container
      driver: none
    networks:
      main:
        aliases:
          - postgres                               # Container name in virtual network that can be addressed
  redis:                                           # Redis container
    image: redis:4.0.6                             # Redis version, installed from image on Docker Hub
    logging:                                       # Disable spamming irrelevant messages from this container
      driver: none
    networks:
      main:
        aliases:
          - redis                                  # Container name in virtual network that can be addressed

networks:                                          # Set virtual network up
  main: