Only attempt to show a list of containers if the node actually has containers

frontend/templates/admin.node.tpl

@@ -25,6 +25,7 @@
 		<th>{%!list-column-ram}</th>
 		<th>{%!list-column-template}</th>
 	</tr>
+	{%if isset|containers == true}
 		{%foreach container in containers}
 			<tr class="clickable" data-url="/{%?container[id]}/">
 				<td class="container-status">
@@ -65,4 +66,5 @@
 				<td>{%?container[template]}</td>
 			</tr>
 		{%/foreach}
+	{%/if}
 </table>