Cannot import custom module to a dag script in Airflow Docker

I have a dag in puckel/docker-airflow container and in dag script I imported a custom module from another script:

from app_store_reviews.app_store_reviews.spiders.list_ids import ListIdsSpider

Where:

ListIdsSpider is a class from list_ids.py. that’s in this path = ‘usr/local/airflow/dags/app_store_reviews/app_store_reviews/spiders’

But I’m getting this kind of error from airflow:
Broken DAG: [/usr/local/airflow/dags/reviews_analysis_dag.py] No module named 'app_store_reviews.app_store_reviews.spiders.list_ids'

How I can solve this? Maybe add this path to PYTHONPATH? if so, How I can do this in a runing container?

Source: Docker Questions