SEBA-563 fix networkx to version 2.2

Change-Id: Ie4b336ac8694fb9752c7110ee4e27edc67b3bb6f
diff --git a/containers/chameleon/Dockerfile.chameleon b/containers/chameleon/Dockerfile.chameleon
index 52eb276..17a7c41 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:3.0.6
+FROM xosproject/xos-base:3.0.7
 
 # xos-base already has protoc and dependencies installed