ARG MY_PYTHON_VER=3.8.10
# base
FROM python:${MY_PYTHON_VER}-buster as base
COPY ./requirements.txt /
RUN pip wheel --no-cache-dir --no-deps --wheel-dir /wheels -r requirements.txt

# stage
FROM python:${MY_PYTHON_VER}-slim-buster
RUN apt-get update && \
    DEBIAN_FRONTEND=noninteractive apt-get -y upgrade && \
    DEBIAN_FRONTEND=noninteractive apt-get -y install jq && \
    apt-get clean
WORKDIR /usr/src/app
COPY --from=base /wheels /wheels
COPY --from=base requirements.txt .
RUN pip install --no-cache /wheels/*
COPY . /usr/src/app
CMD gunicorn -b 0.0.0.0:5000 manage:app