docker-compose.deployment.neo4j.yml

version: '3.7'
# https://docs.docker.com/compose/compose-file/compose-file-v3/

services:
  ontology-neo4j:
    hostname: ontology-neo4j
    container_name: ontology-neo4j
    # Will not publish the neo4j image to DockerHub
    build: neo4j
    environment:
      - NEO4J_USER=${NEO4J_USER:-neo4j}
      # Used for setting the initial neo4j password, defaut to HappyG0at
      - NEO4J_PASSWORD=${NEO4J_PASSWORD:-HappyG0at}
      # Allow the JVM to read cgroup limits
      # -XX:+UseContainerSupport is enabled by default on linux machines,
      # this feature was introduced in java10 then backported to Java-8u191, the base image comes with OpenJDK(build 1.8.0_232-b09)
      # -XX:MaxRAMPercentage (double) is depending on the max memory limit assigned to the contaienr
      # When the container has > 1G memory, set -XX:MaxRAMPercentage=75.0 is good (doesn't waste too many resources)
      - _JAVA_OPTIONS=-XX:+UseContainerSupport -XX:MaxRAMPercentage=75.0
    # Avoid accidentally creating zombie processes
    init: true
    # Specifying a restart policy to avoid downtime
    restart: always
    ports:
      - 7477:7474
      - 7688:7687
    healthcheck:
      # https://docs.docker.com/engine/reference/builder/#healthcheck
      test: ["CMD", "curl", "--fail", "http://localhost:7474/"]
      # test: curl --fail -s http://localhost:7474/ || exit 1
      # test: perl -MIO::Socket::INET -e 'exit(! defined( IO::Socket::INET->new("localhost:7687")))'
      interval: 10s
      timeout: 10s
      retries: 10
    volumes:
      # Logging mount
      - "./neo4j/logs:/usr/src/app/neo4j/logs"
      # Data mount using named voulme
      - ontology-neo4j-data:/usr/src/app/neo4j/data
    # By default this `deploy` key only takes effect when deploying to a swarm with docker stack deploy, and is ignored by docker-compose up
    # However, we can use the `--compatibility` flag within `docker-compose --compatibility up`
    # The `--compatibility` flag will attempt to convert deploy keys in docker-compose v3 to their non-Swarm equivalent
    deploy:
      resources:
        limits:
          memory: 8G
    networks:
      - ontology-neo4j-network

# Named volume
volumes:
  ontology-neo4j-data:

networks:
  ontology-neo4j-network: