mqtt-broker sometimes unhealthy when starting

The mqtt-broker is sometimes "unhealthy" when starting the system e.g. in pipelines. When restarting the pipeline it runs without any problem.

Current settings are:

services:
  mqtt-broker:
    healthcheck:
      test: ["CMD-SHELL", "mosquitto_sub \
        -t '$$SYS/broker/version' \
        -C 1 \
        -u $${MQTT_USER} \ 
        -P $${MQTT_PASSWORD} \
        --id docker-compose-healthcheck"]
      interval: ${MQTT_BROKER_HEALTHCHECK_INTERVAL}
      timeout: 10s
      retries: 6

MQTT_BROKER_HEALTHCHECK_INTERVAL is set by the .env to 10s. Maybe it can be solved by just setting the MQTT_BROKER_HEALTHCHECK_INTERVAL to something larger than 10s or do more retries?