title: pip install ortools: No matching distribution - Alpine
body: <p>In a docker I try to run pip install ortools and it can't be found. Other pip install packages work flawlessly. I use "FROM python:3.6.8-alpine" in my Dockerfile</p>
  
  <pre><code>bash-4.4# pip install ortools
  Collecting ortools
    ERROR: Could not find a version that satisfies the requirement ortools (from versions: none)
  ERROR: No matching distribution found for ortools
  
  
  bash-4.4# pip install --upgrade pip
  Requirement already up-to-date: pip in /usr/local/lib/python3.6/site-packages (19.1.1)
  </code></pre>
  
  <p><strong>Root cause:</strong>
  Gooogle OR tools does not support alpine, since pypi is not supported on alpine</p>
  
  <p>Follow the progress of this issue: <a href="https://github.com/google/or-tools/issues/756" rel="nofollow noreferrer">https://github.com/google/or-tools/issues/756</a></p>