version: '3.7'

services:
  heartbeat:
    build:
      context: extensions/heartbeat/
      args:
        ELASTIC_VERSION: ${ELASTIC_VERSION}
    command:
      # Log to stderr.
      - -e
      # Disable config file permissions checks. Allows mounting
      # 'config/heartbeat.yml' even if it's not owned by root.
      # see: https://www.elastic.co/guide/en/beats/libbeat/current/config-file-permissions.html
      - --strict.perms=false
    volumes:
      - ./extensions/heartbeat/config/heartbeat.yml:/usr/share/heartbeat/heartbeat.yml:ro,Z
    environment:
      ELASTIC_PASSWORD: ${ELASTIC_PASSWORD:-}
      BEATS_SYSTEM_PASSWORD: ${BEATS_SYSTEM_PASSWORD:-}
    networks:
      - elk
    depends_on:
      - elasticsearch