Trying to run syslog in a docker container and not getting any messages

I am trying to run syslog inside of docker and publishing udp/514 so that other devices on my network can send messages to it as well. I am running docker on a Raspberry Pi.
I have been through two different containers from hub.docker.com with no success.

I am new to Docker, so this is probably growing pains and my lack of knowledge regarding Docker.

Would appreciate any pointers on getting syslog or syslog like service up and running.

Thanks,
Ron