[AIRFLOW-3925] Don't pull docker-images on pretest (#4740)
[AIRFLOW-3925] Don't pull docker-images on pretest (#4740)

Co-authored-by: Joshua Carp <dbbd42e8697ea86b5f6e8fe702e84d723b5f5bd3@gmail.com>
owlabs/incubator-airflow,owlabs/incubator-airflow,owlabs/incubator-airflow,owlabs/incubator-airflow