version: "3.1"

# Our containers
services:
  # Temporary container used to initialize the replica set
  mongo-setup:
    container_name: mongo-setup
    image: mongo
    restart: on-failure
    networks:
      default:
    volumes:
      - ./scripts:/scripts      # Ensure the './scripts' directory exists with the 'setupReplicaSet.sh' file
    entrypoint: ["/scripts/setupReplicaSet.sh"]     # Call the 'setupReplicaSet.sh' script on container init
    depends_on:     # Wait for the 3 DB containers to spin up first
      - mongo1
      - mongo2
      - mongo3
     
  mongo1:
    hostname: mongo1      # You need to map this hostname to 127.0.0.1 in your /etc/hosts file
    container_name: mongo1
    image: mongo
    expose:
      - 27017
    ports:
      - 27017:27017
    networks:
      default:
    restart: always
    volumes:
      - ./mongo-volumes/mongo1/data/db:/data/db     # Create a volume to persist data
    entrypoint: ["/usr/bin/mongod", "--bind_ip_all", "--replSet", "rs0", "--journal", "--dbpath", "/data/db", "--enableMajorityReadConcern", "false", "--port", "27017"]


  mongo2:
    hostname: mongo2      # You need to map this hostname to 127.0.0.1 in your /etc/hosts file
    container_name: mongo2
    image: mongo
    expose:
      - 27018
    ports:
      - 27018:27018
    networks:
      default:
    restart: always
    volumes:
      - ./mongo-volumes/mongo2/data/db:/data/db     # Create a volume to persist data
    entrypoint: ["/usr/bin/mongod", "--bind_ip_all", "--replSet", "rs0", "--journal", "--dbpath", "/data/db", "--enableMajorityReadConcern", "false", "--port", "27018"]

  mongo3:
    hostname: mongo3      # You need to map this hostname to 127.0.0.1 in your /etc/hosts file
    container_name: mongo3
    image: mongo
    expose:
      - 27019
    ports:
      - 27019:27019
    networks:
      default:
    restart: always
    volumes:
      - ./mongo-volumes/mongo3/data/db:/data/db     # Create a volume to persist data
    entrypoint: ["/usr/bin/mongod", "--bind_ip_all", "--replSet", "rs0", "--journal", "--dbpath", "/data/db", "--enableMajorityReadConcern", "false", "--port", "27019"]