Merge pull request #266 from 3nprob/clean-docker

Clean up apt caches in docker image

docker/Dockerfile

@@ -2,8 +2,11 @@ FROM python:3
 VOLUME ["~/.teos"]
 WORKDIR /srv
 ADD . /srv/python-teos
-RUN apt-get update && apt-get -y install libffi-dev libssl-dev pkg-config libleveldb-dev
-RUN mkdir ~/.teos && cd python-teos &&  pip install .
+RUN apt-get update && \
+    apt-get -y --no-install-recommends install libffi-dev libssl-dev pkg-config libleveldb-dev && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+RUN mkdir ~/.teos && cd python-teos && pip install .
 WORKDIR /srv/python-teos 
 EXPOSE 9814/tcp
 ENTRYPOINT [ "/srv/python-teos/docker/entrypoint.sh" ]