FROM python:3.8-slim COPY requirements.txt /tmp/requirements.txt RUN pip3 install -r /tmp/requirements.txt COPY backend /app WORKDIR /app # https://stackoverflow.com/questions/58701233/docker-logs-erroneously-appears-empty-until-container-stops ENV PYTHONUNBUFFERED=1 RUN [ ! -d "/datastore" ] && mkdir /datastore CMD [ "python", "./backend.py" ]