title: What am I doing wrong that my python image is so large
body: <p>I have tried
  From Python:3 from winamd/python, python latest, etc....
  and I get 11.3 GB image.</p>
  
  <p>I have pulled various versions, tried it without the microsoft base, it always comes back huge</p>
  
  <p>Dockerfile looks like:</p>
  
  <pre><code>FROM mcr.microsoft.com/windows/servercore:ltsc2019
  
  FROM winamd64/python:3
  
  COPY /dist/requirements_dev.txt /dist/
  
  python -m pip install -r /dist/requirements_dev.txt
  
  COPY /src /
  
  CMD ./app.bat
  </code></pre>
  
  <pre><code>REPOSITORY                             TAG                 IMAGE ID            CREATED             SIZE
  
  ss                                     latest              e87e3348b396        27 hours ago        13.1GB
  
  none&gt;              65f41cd852bd        27 hours ago        13.1GB
  
  none&gt;              f080b61d8285        27 hours ago        11.8GB
  
  none&gt;              ac6d42c7d5a4        27 hours ago        11.3GB
  
  none&gt;              6f56b283cccb        27 hours ago        11.3GB
  
  winamd64/python                        3.7.4               3623371a043f        47 hours ago        11.3GB
  
  mcr.microsoft.com/windows/servercore   ltsc2019            b05c49cadc10        2 weeks ago         4.71GB
  </code></pre>
  
  <p>is what I get.
  I expect numbers in the MB wouldn't I?</p>