SEBA-270 Apply xosbase timestamp code to User object

Change-Id: Iaa2015e691457d3038b807cc00039cb3677fb338
diff --git a/containers/chameleon/Dockerfile.chameleon b/containers/chameleon/Dockerfile.chameleon
index 482f319..103e773 100644
--- a/containers/chameleon/Dockerfile.chameleon
+++ b/containers/chameleon/Dockerfile.chameleon
@@ -13,7 +13,7 @@
 # limitations under the License.
 
 # xosproject/chameleon
-FROM xosproject/xos-base:2.1.9
+FROM xosproject/xos-base:2.1.11
 
 # xos-base already has protoc and dependencies installed