Add instructions for installing Bazel in the Docker setup.
@@ -64,17 +64,22 @@ deactivate
### Using Docker on Ubuntu
-#### 1. Install Docker.
+#### 1. Install Docker
[Install Docker](https://docs.docker.com/install/) on your local machine.
-#### 2. Clone the latest Tensorflow Federated source
+#### 2. Install Bazel
+
+[Install Bazel](https://docs.bazel.build/versions/master/install.html), the
+build tool used to compile Tensorflow Federated.
+
+#### 3. Clone the latest Tensorflow Federated source
```bash
git clone https://github.com/tensorflow/federated.git
```
-#### 2. Start a Docker container.
+#### 4. Start a Docker container
```bash
docker run -it \
