add note about ansible to chroot builder

website/source/docs/builders/amazon-chroot.html.md

@@ -455,6 +455,11 @@ services:
 }
 ```
 
+### Ansible provisioner
+
+Running ansible against `amazon-chroot` requires changing the Ansible connection
+to chroot and running Ansible as root/sudo.
+
 ### Using Instances with NVMe block devices.
 
 In C5, C5d, M5, and i3.metal instances, EBS volumes are exposed as NVMe block

website/source/docs/provisioners/ansible.html.md

@@ -195,7 +195,7 @@ Redhat / CentOS builds have been known to fail with the following error due to
 ### chroot communicator
 
 Building within a chroot (e.g. `amazon-chroot`) requires changing the Ansible
-connection to chroot.
+connection to chroot and running Ansible as root/sudo.
 
 ``` json
 {