MWargelin opened a new issue #16363:
URL: https://github.com/apache/airflow/issues/16363
**Apache Airflow version**: 2.1.0
**Environment**: Docker
**What happened**: I tried to install more than one pip packages using the
_PIP_ADDITIONAL_REQUIREMENTS enviroment variable when running Airflow image
built using the latest Dockerfile. My _PIP_ADDITIONAL_REQUIREMENTS was set to
"pandas scipy". The result was `ERROR: Invalid requirement: 'pandas scipy'`
**What you expected to happen**: I expected both pandas and scipy to install
without errors. I believe that the image is now trying to install one package
called "pandas scipy", which doesn't exist. I believe by removing the double
quotation marks surrounding the ${_PIP_ADDITIONAL_REQUIREMENTS=} from this line
of code would solve the issue:
https://github.com/apache/airflow/blob/main/scripts/in_container/prod/entrypoint_prod.sh#L327
**How to reproduce it**: Using image built using the latest Dockerfile, try
to run the image with `docker run --rm -it --env
_PIP_ADDITIONAL_REQUIREMENTS="pandas scipy" image:tag`
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