Question 201407 in Docker Question posted in
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docker – ADD file fails

I am trying to splin up a ECR repo with some custom processing scripts for my data analysis:

this is my folder structure:

|-docker 
| |--DockerFile 
| |--requirement.txt 
|-data_processes.py 
|-preprocessing.py

This is the content I am writing in my dockerfile.

%%writefile docker/Dockerfile

FROM python:3.9.16-buster

WORKDIR /usr/src/processing_job #set working dir in container

COPY requirements.txt ../ #copy requirements in parent folder i.e. /usr/src/

RUN pip install --no-cache-dir -r ../requirements.txt

ENV PYTHONUNBUFFERED=TRUE

ADD preprocessing.py ./ #ADD files to /usr/src/processing_job since it current dir
ADD data_process.py ./ #ADD files to /usr/src/processing_job since it current dir

ENTRYPOINT ["python3", "preprocessing.py"]

my requirement file get’s installed properly but when it comes to ADD preprocessing.py ./ it fails with below message.

Step 6/8 : ADD preprocessing.py ./
ADD failed: file not found in build context or excluded by .dockerignore: stat preprocessing.py: file does not exist

How can I change my file structure or commands to add the files?

I want to add my preprocessing.py and data_processes.py files to be added to /usr/src/processing_job

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3

Answers


  1. 0

    You are building the container with your docker/ directory as the build context. Only files in that directory are available to the build process. Thus, the .py files in parent directory are not visible to the build process.

    You have to define build context so that it includes all files you need during the container build. This can be done, for example, by moving Dockerfile to same level where those .py files currently are.

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  2. 0

    You cannot include files data_processes.py and preprocessing.py because they are not in the same directory as Dockerfile.

    The Dockerfile sees the files only on its own level and deeper. So you have to change your file structure to this:

    |-docker 
| |--DockerFile 
| |--requirement.txt 
| |--data_processes.py 
| |--preprocessing.py
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  3. 0

    The path is relative from where your Dockerfile is.
    You have to add "../" before your .py files since they are in the parent directory.

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