title: Cannot unzip zip file in DockerFile as non root user
body: <p>I keep getting the below error when I try to unzip a zip file in my DockerFile</p>
  
  <pre><code>checkdir error:  cannot create my-archive
                   Permission denied
                   unable to process my-archive/data/sample.jar
  The command '/bin/sh -c unzip /home/kong/my-archive.zip' returned a non-zero code: 2
  </code></pre>
  
  <p>In my DockerFile I have:</p>
  
  <pre><code>RUN useradd -ms /bin/bash kong
  RUN echo "kong:password" | chpasswd
  RUN adduser kong sudo
  USER kong
  RUN wget "${url}/my-archive.zip" -P /home/kong
  RUN unzip /home/kong/my-archive.zip
  </code></pre>
  
  <p>It works if I do:</p>
  
  <pre><code>USER root
  RUN unzip /home/kong/my-archive.zip
  </code></pre>
  
  <p>but I would like to be able to do this as a non root user.</p>
  
  <p>Why does it fail as non root user <code>kong</code>?</p>