SEBA-622 Implement filetransfer API;
Support gRPC Reflection;
Mark bookkeeping fields in xproto

Change-Id: Ia8e925a520b7821e72f7c3e9c018ce9cceb8a3ab
diff --git a/Dockerfile.core b/Dockerfile.core
index 2e5dcf5..443452e 100644
--- a/Dockerfile.core
+++ b/Dockerfile.core
@@ -13,7 +13,7 @@
 # limitations under the License.
 
 # xosproject/xos-core
-FROM xosproject/alpine-grpc-base:0.9.0
+FROM xosproject/alpine-grpc-base:0.9.1
 
 # Install libraries and python requirements
 COPY requirements.txt /tmp/requirements.txt