Require Bazel 0.3.0 and update documentation and dockerfile according…

…ly. We technically need >=0.2.2 already to resolve runfiles paths correctly, and now TensorFlow requires 0.3.0, so updating our requirement as well.

Change: 132099802

WORKSPACE

@@ -3,3 +3,7 @@ workspace(name = "tf_serving")
 # Please add all new TensorFlow Serving dependencies in workspace.bzl.
 load('//tensorflow_serving:workspace.bzl', 'tf_serving_workspace')
 tf_serving_workspace(__workspace_dir__)
+
+# Specify the minimum required bazel version.
+load("@org_tensorflow//tensorflow:tensorflow.bzl", "check_version")
+check_version("0.3.0")

tensorflow_serving/g3doc/setup.md

@@ -6,21 +6,21 @@ To compile and use TensorFlow Serving, you need to set up some prerequisites.
 
 ### Bazel
 
-TensorFlow Serving requires Bazel 0.2.0 or higher. You can find the Bazel
+TensorFlow Serving requires Bazel 0.3.0 or higher. You can find the Bazel
 installation instructions [here](http://bazel.io/docs/install.html).
 
 If you have the prerequisites for Bazel, those instructions consist of the
 following steps:
 
 1.  Download the relevant binary from
     [here](https://github.com/bazelbuild/bazel/releases).
-    Let's say you downloaded bazel-0.2.0-installer-linux-x86_64.sh. You would
+    Let's say you downloaded bazel-0.3.0-installer-linux-x86_64.sh. You would
     execute:
 
     ~~~shell
     cd ~/Downloads
-    chmod +x bazel-0.2.0-installer-linux-x86_64.sh
-    ./bazel-0.2.0-installer-linux-x86_64.sh --user
+    chmod +x bazel-0.3.0-installer-linux-x86_64.sh
+    ./bazel-0.3.0-installer-linux-x86_64.sh --user
     ~~~
 2.  Set up your environment. Put this in your ~/.bashrc.
 

tensorflow_serving/tools/docker/Dockerfile.devel

@@ -56,7 +56,7 @@ RUN echo "build --spawn_strategy=standalone --genrule_strategy=standalone" \
     >>/root/.bazelrc
 ENV BAZELRC /root/.bazelrc
 # Install the most recent bazel release.
-ENV BAZEL_VERSION 0.2.0
+ENV BAZEL_VERSION 0.3.0
 WORKDIR /
 RUN mkdir /bazel && \
     cd /bazel && \