nginx proxy exiting in docker compose when we get hello from palo alto networks

I have a docker compose where the nginx proxy has exited twice in the last month or so and the last log is always greetings from palo alto networks. I have done a cursory search of the internet, CVEs, and this bug tracker. I don't want to cause undue noise, but if this isn't due to something I did incorrectly, it is a fairly serious issue.

So far the same sequence of events: I go to access cfrontend.example.com and am unable to Check docker, see calibre container is running, but calibresslproxy exited Check logs, see last log is hello from palo alto networks Nothing else on the machine running this seems amiss, other containers configured similarly to this one are still up and running (range,public)

I am using :latest tag which is a no no, but this isn't exactly a production service. Version at startup: Info: running nginx-proxy version 1.7.1-26-g219d3b1 See attached file for docker-compose

docker-compose.yml

see attached file nginx_dash_t

nginx_dash_t.txt

Shows last legit log and then the one that stops the service:

end_of_log2.txt