Clarify problems with boot2docker?

[mamacdon]

Can cloudrocker be made to work under boot2docker? The README says:

Feel free to try Cloud Rocker with boot2docker, and good luck with the volume mounts.

I took this to mean that it was at least possible (maybe I misread some sarcasm there). Anyway, when I rock up or rock build, I get an error:

docker@boot2docker:/c/Users/mamacdon/code/myapp$ rock build
Starting the CloudRocker container...
no such file or directory
2015/04/27 18:42:32 Error: Error response from daemon: Cannot start container 4f1d198adcc6b7c96a5c87666271d61b2c5cb151d66e9f91f92c9573df34d5bc: [8] System error: no such file or directory
docker@boot2docker:/c/Users/mamacdon/code/myapp$

It would be nice to have more detail in the docs about why this will or won't work.