message: Adapt build instruction to recent changes.
  Reviewers: #tensorflow, #documentation, davidn
diff: @@ -18,11 +18,11 @@ Build tool prerequisites
  sudo apt install openjdk-8-jdk
  - - Bazel is the build tool - use version 0.21.0 or later versions
  + - Bazel is the build tool - use version 0.24.1 or later versions
  .. code-block:: shell
  - export BAZEL_VERSION=0.21.0
  + export BAZEL_VERSION=0.24.1
  wget https://github.com/bazelbuild/bazel/releases/download/${BAZEL_VERSION}/bazel-${BAZEL_VERSION}-installer-linux-x86_64.sh
  chmod +x bazel-${BAZEL_VERSION}-installer-linux-x86_64.sh
  ./bazel-${BAZEL_VERSION}-installer-linux-x86_64.sh --user
  @@ -76,7 +76,7 @@ Build instructions
  .. code-block:: console
  - source tensorflow_packaging/configure python3
  + bash tensorflow_packaging/configure python3
  Using the pip wheel package generator as the final target, build TensorFlow
  