Hello BigBear, what about GrayLog? its amazing Syslog service for many many external devices 
I’d be keen on this - I can’t get it running from their docker compose … I get close, but either fail communicating with the mongodb instance or the graylog datanode ref: GitHub - Graylog2/docker-compose: A set of Docker Compose files that allow you to quickly spin up a Graylog instance for testing or demo purposes.
I can get it working in standalone docker on my linux boxes, but not in Zima or CasaOS