# There is no buster image yet and stretch doesn't have a docker package.  So let's just "upgrade" the image to buster.
FROM python:3.7-stretch

RUN sed -re 's/stretch/buster/g' -i /etc/apt/sources.list \
  && useradd -d /home/matemat -m matemat \
  && mkdir -p /var/matemat/db /var/matemat/upload \
  && chown matemat:matemat -R /var/matemat/db \
  && chown matemat:matemat -R /var/matemat/upload \
  && apt-get update -qy \
  && apt-get install -y --no-install-recommends file sudo openssh-client git docker.io build-essential \
  && python3.7 -m pip install coverage wheel pycodestyle mypy \
  && rm -rf /var/lib/apt/lists/*

WORKDIR /home/matemat