Merge pull request docker#604 from docker/cloud-byoh-os

Cloud: Add note about X64

Author: LRubin

docker-cloud/infrastructure/byoh.md

@@ -10,6 +10,8 @@ title: Use the Docker Cloud Agent
 
 Docker Cloud allows you to use any Linux host ("bring your own host") as a node which you can then use to deploy containers. To do this, you install the **Docker Cloud Agent** on your Linux host so that Docker Cloud can remotely manage it.
 
+> **Note**: The Docker Cloud Agent only supports x64 architecture at this time. 
+
 The **Docker Cloud Agent** installs its own Docker binary, and automatically removes any prior installation of the Docker Engine packages. See the [Known Limitations](byoh.md#known-limitations) section for more information.
 
 You can still run `docker` CLI commands on a host that is running the Docker Cloud Agent. If you do this, you might see the Docker Cloud system containers that start with `dockercloud/`.
@@ -127,4 +129,4 @@ script also tries to install the kernel headers required for `AUFS` support.
 > **Note**: If you remove, upgrade, or install over the version of Docker Engine bundled with the Docker Cloud Agent, your nodes may not maintain a connection  with Docker Cloud correctly. You will have to reinstall a compatible Engine version (currently version 1.11.2-cs5). Contact Docker Support for more information.
 
 * If you were already using the `AUFS` storage driver before installing `dockercloud-agent`, your existing containers and images appear automatically once installation finishes.
-* If you were using `devicemapper` or any other storage driver, and the `AUFS` driver installs successfully you will not be able to use your existing containers and images. You can check if the installation succeeded by running `docker info | grep Storage`.
+* If you were using `devicemapper` or any other storage driver, and the `AUFS` driver installs successfully you will not be able to use your existing containers and images. You can check if the installation succeeded by running `docker info | grep Storage`.