docker-based-development-guide/python/Dockerfile

FROM python:3.7.3-alpine3.9 as dev

RUN mkdir /work/
WORKDIR /work/

COPY ./src/requirements.txt /work/requirements.txt
RUN pip install -r requirements.txt

COPY ./src/ /work/

###########START NEW IMAGE###################

FROM python:3.7.3-alpine3.9 as prod

RUN mkdir /app/
WORKDIR /app/

COPY --from=dev /work/ /app/
RUN pip install -r requirements.txt
ENV FLASK_APP=server.py
CMD flask run -h 0.0.0 -p 5000