-# CI to build a Docker image with the A1 mediator
-# Relies on NNG from base image
-# Installs RMr using debian package hosted at packagecloud.io
+# This container uses a 2 stage build!
+# Tips and tricks were learned from: https://pythonspeed.com/articles/multi-stage-docker-python/
+FROM python:3.8-alpine AS compile-image
+# Gevent needs gcc, make, file, ffi
+RUN apk update && apk add gcc musl-dev make file libffi-dev