Update Dockerfile

Author: quinn-dougherty

Dockerfile

@@ -3,6 +3,7 @@ RUN mkdir /app
 WORKDIR /app
 COPY README.md .
 COPY setup.py .
+COPY requirements.txt .
 # Creating an empty src dir is a (hopefully) temporary hack to improve layer caching and speed up image builds
 # todo fix once the Pipfile, setup.py, requirements.txt, pyprojec.toml build/dist story is figured out
 RUN mkdir src && pip install -q .