SEBA-420 remove superfluous xproto options

Change-Id: I8c2242466947d5196579f904abe17d12891fa7ac
diff --git a/Dockerfile.synchronizer b/Dockerfile.synchronizer
index 4ff68ac..0da2edb 100644
--- a/Dockerfile.synchronizer
+++ b/Dockerfile.synchronizer
@@ -17,7 +17,7 @@
 
 # xosproject/rcord-synchronizer
 
-FROM xosproject/xos-synchronizer-base:2.2.11
+FROM xosproject/xos-synchronizer-base:2.2.18
 
 COPY xos/synchronizer /opt/xos/synchronizers/rcord
 COPY VERSION /opt/xos/synchronizers/rcord/