added docker section to /downloads

templates/public/download.html

@@ -79,6 +79,11 @@ <h3>Vagrant images</h3>
     </br>
     <code>vagrant up</code>
 
+    <h3>Docker image</h3>
+
+    <p>Docker image is available on <a href="https://hub.docker.com/r/archlinux/base/">Docker Hub</a>. You can run the image with the following command:</p>
+    <code>docker run -it archlinux/base</code>
+
     <h3>HTTP Direct Downloads</h3>
 
     <p>In addition to the BitTorrent links above, install images can also be