toString ObjectId before querystring

Author: tjmehta

lib/models/apis/docker.js

@@ -117,7 +117,7 @@ Docker.prototype.createImageBuilderAndAttach = function (sessionUser, version, c
     var self = this;
     debug('create container');
     var builderContainerData = {
-      name: version.build._id,
+      name: version.build._id.toString(),
       Image: process.env.DOCKER_IMAGE_BUILDER_NAME + ':' + process.env.DOCKER_IMAGE_BUILDER_VERSION,
       Env  : getEnvForImageBuilder(version, dockerTag),
       Binds: []