Install Mako to generate files in grpc/grpc-node

templates/tools/dockerfile/test/node_jessie_x64/Dockerfile.template

@@ -32,5 +32,8 @@
   <%include file="../../python_deps.include"/>
   <%include file="../../node_deps.include"/>
   <%include file="../../run_tests_addons.include"/>
+  # Install Mako to generate files in grpc/grpc-node
+  RUN pip install Mako
+
   # Define the default command.
   CMD ["bash"]

tools/dockerfile/test/node_jessie_x64/Dockerfile

@@ -102,5 +102,8 @@ RUN ln -s /usr/bin/ccache /usr/local/bin/clang++
 
 RUN mkdir /var/local/jenkins
 
+# Install Mako to generate files in grpc/grpc-node
+RUN pip install Mako
+
 # Define the default command.
 CMD ["bash"]

tools/internal_ci/helper_scripts/prepare_build_macos_rc

@@ -60,7 +60,7 @@ pod repo update  # needed by python
 
 # python
 pip install virtualenv --user python
-pip install -U six tox setuptools twisted pyyaml --user python
+pip install -U Mako six tox setuptools twisted pyyaml --user python
 export PYTHONPATH=/Library/Python/3.4/site-packages
 
 # set xcode version for Obj-C tests