services:
  dyndns:
    build:
      context: .
    image: local/hetzner-dyndns-dashboard:latest
    restart: unless-stopped
    ports:
      # Use one explicit RFC1918 host address for LAN access, never 0.0.0.0 in HTTP mode.
      - "${BIND_ADDRESS:-127.0.0.1}:${WEB_PORT:-8080}:8080"
    environment:
      APP_MODE: ${APP_MODE:-lan}
      APP_ADDRESS: :8080
      APP_DATA_DIR: /data
      APP_MASTER_KEY_FILE: /run/secrets/dyndns_master_key
    volumes:
      - dyndns-data:/data
    secrets:
      - dyndns_master_key
    read_only: true
    tmpfs:
      - /tmp:rw,noexec,nosuid,size=16m
    security_opt:
      - no-new-privileges:true
    cap_drop:
      - ALL

secrets:
  dyndns_master_key:
    file: ${MASTER_KEY_FILE:-./secrets/dyndns_master_key}

volumes:
  dyndns-data: