AIRFLOW__CORE__SQL_ALCHEMY_CONN and AIRFLOW__CELERY__RESULT_BACKEND should be exported in the entrypoint when not using SequentialExecutor

[theoutsider24]

AIRFLOW__CORE__SQL_ALCHEMY_CONN and AIRFLOW__CELERY__RESULT_BACKEND environment variables are required to run airflow commands when not using the SequentialExecutor
In entrypoint.sh line ~62 they're assigned but not exported so they're used for the initialising airflow commands but not present if attempting to use any other commands later

[NBardelot]

Hi, please take a look at #495, I think it could solve your issue.