need to truncate /opt/tosca/translator/__init__.py, not just create it
diff --git a/containers/xos/Dockerfile.base b/containers/xos/Dockerfile.base
index f3bb62e..8ca81eb 100644
--- a/containers/xos/Dockerfile.base
+++ b/containers/xos/Dockerfile.base
@@ -106,7 +106,7 @@
     git checkout $HT_BRANCH && \
     mkdir -p /opt/tosca && \
     mv /tmp/heat-translator/translator /opt/tosca/translator && \
-    touch /opt/tosca/translator/__init__.py && \
+    echo > /opt/tosca/translator/__init__.py && \
     rm -rf /tmp/heat-translator
 
 # Install custom Ansible