1. does not prompt on initial install (but does start the daemon)
2. does prompt on every reinstall / upgrade (if the daemon is running)
3. does prompt during "dpkg-reconfigure docker.io" (but does _not_ [re]start the daemon)
4. works properly with DEBIAN_FRONTEND=noninteractive -- user's previous/stored answer to the question automatically applies with no prompt
Proposed patch attached -- I've tested that this:
1. does not prompt on initial install (but does start the daemon) FRONTEND= noninteractive -- user's previous/stored answer to the question automatically applies with no prompt
2. does prompt on every reinstall / upgrade (if the daemon is running)
3. does prompt during "dpkg-reconfigure docker.io" (but does _not_ [re]start the daemon)
4. works properly with DEBIAN_