title: /bin/sh: 1: python: not found while running docker container
body: <p>This is my docker file</p>
  
  <pre><code>FROM ubuntu:14.04 
  ADD ./file.py ./
  CMD python file.py
  </code></pre>
  
  <p>I am building using below command:  </p>
  
  <pre><code>docker build -t myimage .
  </code></pre>
  
  <p>And running using this: </p>
  
  <pre><code>docker run myimage
  </code></pre>
  
  <p>And then getting below error after running:</p>
  
  <pre><code>/bin/sh: 1: python: not found
  </code></pre>
  
  <p>What should I do so the file file.py will be executed using python ? </p>