[AIRFLOW-4763] Allow list in DockerOperator.command (#5408)
[AIRFLOW-4763] Allow list in DockerOperator.command (#5408)


(cherry picked from commit 2b94600d629814b91415bc0f5472a336f61a873a)

owlabs/incubator-airflow,owlabs/incubator-airflow,owlabs/incubator-airflow,owlabs/incubator-airflow