FROM debian
RUN apt-get update && apt-get install \
  -y --no-install-recommends python3 python3-virtualenv
RUN python3 -m virtualenv --python=/usr/bin/python3 /opt/venv
COPY ./requirements.txt /usr/src/app/
WORKDIR /usr/src/app/
RUN . /opt/venv/bin/activate && pip install -r requirements.txt
COPY . .
EXPOSE 8000
CMD ["python", "./manage.py", "runserver"]