title: ip command is missing from ubuntu docker image
body: <p>when i'm trying to perform ip command in ubuntu docker container, i'm getting:</p>
  
  <blockquote>
    <p>bash: ip: command not found.</p>
  </blockquote>
  
  <p>ubuntu version:</p>
  
  <pre><code>DISTRIB_ID=Ubuntu
  DISTRIB_RELEASE=18.04
  DISTRIB_CODENAME=bionic
  DISTRIB_DESCRIPTION="Ubuntu 18.04.1 LTS"
  </code></pre>
  
  <p>what package should i install for that command?</p>
  
  <p>Thanks</p>