Only anecdotes from several people working there at different divisions. I think I've seen it mentioned here at times as well.
One of the lead devs - years of tenure - on one of the Android backend teams had barely heard of the name and wasn't sure what it was when I brought it up 2 years ago.
Linux containers including Docker are absolutely widespread as I understand it, though.
Aside: They seemed to like their Linux containers in 2014[0]. No idea if they're still using the same technique, or have maybe moved onto Kubernetes?
[0]: https://www.theregister.com/2014/05/23/google_containerizati...