docker-compose integration cannot install new requirements

Using pip 19, I cannot install new requirements added to the requirements.txt file for a docker-compose (or docker) remote interpreter in pycharm. I'm pretty sure that pycharm is trying to use a pip feature removed a long time ago, but not positive. You can see the error below. How can I get this integration working properly? 

Error: AttributeError: module 'pip' has no attribute 'main'