MVP

• Build images for linux/amd64 and arm (whatever the Pi 4 needs)
• Merge config directories
• Update sample so daemon accepts external connections
• Consider exposing stats endpoints too
• Anything useful in the entrypoints of other implementations?
  • https://github.com/upshift-docker/nut-upsd
  • https://github.com/instantlinux/docker-tools/tree/master/images/nut-upsd