Pin Bazel version to 0.4.4 in Dockerfile

tools/dockerfile/test/bazel/Dockerfile

@@ -72,6 +72,13 @@ RUN curl https://bazel.build/bazel-release.pub.gpg | apt-key add -
 RUN apt-get -y update
 RUN apt-get -y install bazel
 
+# Pin Bazel to 0.4.4
+# Installing Bazel via apt-get first is required before installing 0.4.4 to
+# allow gRPC to build without errors. See https://github.com/grpc/grpc/issues/10553
+RUN curl -fSsL -O https://github.com/bazelbuild/bazel/releases/download/0.4.4/bazel-0.4.4-installer-linux-x86_64.sh
+RUN chmod +x ./bazel-0.4.4-installer-linux-x86_64.sh
+RUN ./bazel-0.4.4-installer-linux-x86_64.sh
+
 RUN mkdir -p /var/local/jenkins
 
 # Define the default command.