Docker healthcheck for Flask app with Celery

With docker-compose it can be done the next way

flask_app:
    ...
    healthcheck:
      test: wget --spider --quiet http://localhost:8080/-/health
celery_worker:
    ...
    command: celery worker --app app.celeryapp -n worker@%h --loglevel INFO
    healthcheck:
      test: celery inspect ping --app app.celeryapp -d worker@$$HOSTNAME

Where /-/health is just a simple route

@app.route("/-/health")
def health():
    return 'ok'
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