Question 82873 in Docker Question posted in
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How to add copy files to Docker image

I’m running a python script to manipulate pictures. When I run the test the system obviously does not find the images. I new to docker and don’t really understand how to do that.

This is how the structure looks
enter image description here

And this is the dockerfile

FROM ubuntu:latest

RUN apt update
RUN apt install python3 -y
RUN apt-get -y install python3-pip
RUN pip install pillow
RUN pip install wand
RUN DEBIAN_FRONTEND="noninteractive" apt-get install libmagickwand-dev --no-install-recommends -y

WORKDIR /usr/app/src
COPY image_converter.py ./
COPY test_image_converter.py ./

RUN python3 -m unittest test_image_converter.py
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3

Answers


  1. 0 
    COPY image_converter.py ./
COPY test_image_converter.py ./

    here you’ve COPIED ****.py file to ./(== WORKDIR)

    so, in the same way copy your image files to your WORKDIR

    such as

    COPY test_images ./

    This should work

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  3. 0

    • First, you didn’t copy the image folder, should have these commands:

      WORKDIR /usr/app/src

      COPY test_images ./

    • Second, you should combine same type of Docker commands (to reduce layers, hence reduce docker image’s size)
      example : instead of saying

      COPY image_converter.py ./

      COPY test_image_converter.py ./

    You can write

    COPY *.py ./

    Another example :

    RUN apt update

    RUN apt install python3 -y

    You can write

    RUN apt update; apt install python3 -y

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