Clarify meteor build step logging

docker/compose/mozdef_meteor/Dockerfile

@@ -46,7 +46,8 @@ RUN mkdir -p /opt/mozdef/envs/meteor/mozdef
 RUN if [ "${METEOR_BUILD}" = "YES" ]; then \
         cd /opt/mozdef/envs/mozdef/meteor && \
         meteor npm install && \
-        meteor build --server localhost:3002 --directory /opt/mozdef/envs/meteor/mozdef && \
+        echo "Starting meteor build" && \
+        time meteor build --server localhost:3002 --directory /opt/mozdef/envs/meteor/mozdef && \
         cp -r /opt/mozdef/envs/mozdef/meteor/node_modules /opt/mozdef/envs/meteor/mozdef/node_modules &&\
         cd /opt/mozdef/envs/meteor/mozdef/bundle/programs/server && \
         npm install ;\