[fix] Un-break setuptools for pre-commit action (#142)

## Changes made
Set env variable for `SETUPTOOLS_USE_DISTUTILS` that un-breaks the pre-commit github action. This was necessitated by an upstream release of `virtualenv` that upgraded `setuptools`.

More details can be found here: pre-commit/pre-commit#2178

## Screencapture (if applicable)


## Testing
- [ ] End-to-End


## Work left to be done

DEVBOX_VERSION

@@ -1 +1 @@
-1.0.0
+1.0.1

Dockerfile

@@ -10,6 +10,7 @@ ENV PYTHONUNBUFFERED 1
 ENV PIPENV_VENV_IN_PROJECT 1
 ENV FLASK_APP 'server:app'
 ENV PATH /home/worker/app/.venv/bin:$PATH
+ENV SETUPTOOLS_USE_DISTUTILS stdlib
 
 RUN pip install pipenv