updates

app/docker/components/volumesNFSForm/volumesnfsForm.html

@@ -57,7 +57,7 @@
           class="form-control"
           ng-model="$ctrl.data.mountPoint"
           name="nfs_mountpoint"
-          placeholder="e.g. /export/share, :/export/share, /share or :/share"
+          placeholder="e.g. /export/share, :/export/share, address:/export/share, /share, :/share or address:/share"
           required
         />
       </div>

app/docker/views/volumes/create/createVolumeController.js

@@ -97,7 +97,7 @@ angular.module('portainer.docker').controller('CreateVolumeController', [
       }
       driverOptions.push({ name: 'o', value: options });
 
-      var mountPoint = data.mountPoint[0] === ':' ? data.mountPoint : ':' + data.mountPoint;
+      var mountPoint = data.mountPoint.indexOf(":") === -1 ? ":" + data.mountPoint : data.mountPoint;
       driverOptions.push({ name: 'device', value: mountPoint });
     }