An interesting point was raised recently in https://bugs.launchpad.net/cloud-images/+bug/2153133, referring to the fact that the current Pebble location (`/usr/bin/pebble`) may conflict with existing Ubuntu packages (e.g. `pebble` (ACME (RFC 8555) test-only server)). While it is true that we can't prevent every single potential conflict out there, we may want to consider putting Pebble in a more rock-specific path (potentially `/.rock`?). _Needs discussion_