[SOLVED] Filesize of dockerimage doubles with different python version as baseimage

Issue

I build dockerimages for a jupyterlab with some apt and pip packages.

docker image ls:
jupyterlab    3.7.12     9d4cc5c15853   27 minutes ago   2.3GB
jupyterlab    3.9.9      1962a1eb6bff   25 hours ago     1.12GB

The filesize of the images differs quite much, I only took a another python version.

Here are the dockerfiles for comparison: This dockerfile is build with python 3.7.12 as baseimage:

FROM python:3.7.12-slim-buster

WORKDIR /

COPY wheels/scipy-1.7.3-cp37-cp37m-linux_armv7l.whl ./wheels/scipy-1.7.3-cp37-cp37m-linux_armv7l.whl

## INSTALL WITH APK
RUN apt-get update && apt-get install -y \
    g++ \
    gcc \
    python3-dev \ 
    libjpeg-dev \
    zlib1g-dev \
    make \
    wget \
    libatlas-base-dev \
    libffi-dev 

## INSTALL WITH PIP
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir pillow && \
    pip install --no-cache-dir matplotlib && \
    pip install --no-cache-dir pandas && \
    pip install --no-cache-dir setuptools && \
    pip install --no-cache-dir cffi && \
    pip install --no-cache-dir GLIBC && \
    pip install --no-cache-dir numpy && \
    pip install --no-cache-dir /wheels/scipy-1.7.3-cp37-cp37m-linux_armv7l.whl && \
    pip install --no-cache-dir jupyterlab
    # pip install --no-cache-dir /wheels/numpy-1.21.4-cp39-cp39-linux_armv7l.whl && \
    # pip install --no-cache-dir /wheels/scipy-1.7.2-cp39-cp39-linux_armv7l.whl && \
    # pip install --no-cache-dir /wheels/jupyterlab-4.0.0a15-py3-none-any.whl 
    ...    

This is the one with python 3.9.9 as baseimage:

FROM python:3.9.9-slim-buster

WORKDIR /

COPY wheels ./wheels

## INSTALL WITH APK
RUN apt-get update && apt-get install -y \
    g++ \
    gcc \
    python3-dev \ 
    libjpeg-dev \
    zlib1g-dev \
    make \
    wget \
    libatlas-base-dev \
    libffi-dev 

## INSTALL WITH PIP
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir pillow && \
    pip install --no-cache-dir matplotlib && \
    pip install --no-cache-dir pandas && \
    pip install --no-cache-dir setuptools && \
    pip install --no-cache-dir cffi && \
    pip install --no-cache-dir GLIBC && \
    pip install --no-cache-dir /wheels/numpy-1.21.4-cp39-cp39-linux_armv7l.whl && \
    pip install --no-cache-dir /wheels/scipy-1.7.2-cp39-cp39-linux_armv7l.whl && \
    pip install --no-cache-dir /wheels/jupyterlab-4.0.0a15-py3-none-any.whl 
    ...

The wheels folder and some other files are deleted in both cases. Why is there such a big difference in filesize???

Solution

I solved the issue by removing "apt-get python3-dev", it was version 3.7.2. My baseimage is python 3.7.12 so maybe there was a conflict, I can not explain it.

The size of the image:

#docker image ls

REPOSITORY      TAG            IMAGE ID        CREATED             SIZE
jupyterlab      3.7.12_nodev   6112bcaff54d    17 hours ago        1.18GB
jupyterlab      3.9.9          1962a1eb6bff    2 days ago          1.12GB

Answered By - AldegarRızvan

Answer Checked By - Clifford M. (WPSolving Volunteer)