Add docker file

Not really tested since my docker environment isn't working. To wrap
up later.

Dockerfile

@@ -0,0 +1,13 @@
+FROM debian:buster
+RUN apt-get update && apt-get install -y \
+    pipenv
+RUN mkdir /venv
+RUN mkdir /src
+VOLUME /src
+
+
+WORKDIR /venv
+ENV PIPENV_VENV_IN_PROJECT="enabled"
+COPY Pipfile .
+COPY Pipfile.lock .
+RUN pipenv sync