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Every time I build the image and run it and then delete it. Then after I want to run this image again after changing some code in our application, then all the requirements.txt file and the base image python:3 will be downloaded again. Then what I have to stop again downloading the requirements.txt file every time. Can you give me any solution?

Just have a look of my Dockerfile

FROM  python:3
ADD . /usr/src/app
WORKDIR /usr/src/app
RUN pip3 install -r requirements.txt
EXPOSE 5050
CMD [ "python", "app.py" ]
Alastair McCormack
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Digbijay Das
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1 Answers1

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Add the requirements separately. The layer with pip3 install will only be executed again when requirements.txt changes.

FROM  python:3
ADD requirements.txt /usr/src/app/requirements.txt
WORKDIR /usr/src/app
RUN pip3 install -r requirements.txt
ADD . /usr/src/app
EXPOSE 5050
CMD [ "python", "app.py" ]
Botje
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