title: Using 2 FROM in docker file: alpine-java-python and python3 removes installed java?
body: <p>In my project, I need java and python3.
  I used 2 FROM statements in Dockerfile.</p>
  
  <pre><code>FROM docker.&lt;xx&gt;.com/alpine-java-python
  ......
  ......
  FROM python3
  ......
  ......
  CMD [ "java", "-jar", "abc.jar"]
  </code></pre>
  
  <p>On starting of the container it gives "java command not found".
  Why does the installed java gets deleted when using FROM python3 ?</p>