title: How to use --init parameter in docker run
body: <p>There are <code>--init</code> and <code>--init-path</code> options for <code>docker run</code>, but it's not clear how to use it.</p>
  <p>At first, I thought it's something like <a href="https://github.com/Yelp/dumb-init" rel="noreferrer">dumb-init</a>, but included in docker core (kind of &quot;native&quot;). But <code>--init</code> key demands <code>--init-path</code> to be set as well, pointing to <code>docker-init</code> binary, and gives no clue on where to take it. Google is silent about <code>docker-init</code>.</p>
  <p>Okay, maybe I'm supposed to use <code>yelp/dumb-init</code> or 'phusion/baseimage-docker', but those solutions don't seem to use <code>docker run</code>'s <code>--init</code> option.</p>
  <p>So, I'm curious where do I take this &quot;docker-init binary&quot; to set the <code>--init-path</code> to?</p>