How do I find the Docker REST API URL?
<p>I have installed the Docker build step plugin for Jenkins.</p>

<p>The documentation is telling me:</p>

<pre><code>Name      : Choose a name for this Docker cloud provider
Docker URL: The URL to use to access your Docker server API (e.g: http://172.16.42.43:4243)
</code></pre>

<p>How can I find my URL to the REST API (I have Docker installed on my host)?</p>