Update container build instructions. (#121)

diff --git a/container/README.md b/container/README.md
index 5415de0..34a8361 100644
--- a/container/README.md
+++ b/container/README.md
@@ -28,24 +28,24 @@
 You will need a valid project ID to build the toolchain-container.
 
 You can build a toolchain-container with
-[ubuntu16-04](https://console.cloud.google.com/launcher/details/google/ubuntu16-04) as
+[ubuntu16-04](https://console.cloud.google.com/gcr/images/cloud-marketplace/GLOBAL/google/ubuntu16_04) as
 the base container by running:
 
 ``` shell
-container/build.sh -p my-project-id -d ubuntu16_04 -c rbe-ubuntu16-04 -t latest -b my-gcs-bucket
+container/build.sh -p my-project-id -d rbe-ubuntu16_04 -c test-rbe-ubuntu16_04 -t latest -b my-gcs-bucket
 ```
 
 Congratulations! Your docker container is now available in [Container
 Registry](https://cloud.google.com/container-registry/)
 
 ```shell
-gcr.io/my-project-id/rbe-ubuntu16-04:latest
+gcr.io/my-project-id/test-rbe-ubuntu16_04:latest
 ```
 
 You can pull the built container to local
 
 ```shell
-gcloud docker -- pull gcr.io/my-project-id/rbe-ubuntu16-04:latest
+gcloud docker -- pull gcr.io/my-project-id/test-rbe-ubuntu16_04:latest
 ```
 
 ### Build locally
@@ -58,11 +58,11 @@
 Run the following command:
 
 ```shell
-container/build.sh -l -d ubuntu16_04
+container/build.sh -l -d rbe-ubuntu16_04
 ```
 
 You docker container is now available locally and you can try it out by running:
 
 ```shell
-docker run -it rbe-ubuntu16-04:latest /bin/bash
+docker run -it rbe-ubuntu16_04:latest /bin/bash
 ```