I did not assign anything to the nic, just left it as up.
I have stopped testing docker networking with my server now I started to get very strange results.
By manually creating the bridge between the docker network and eth1 using brctl all of my traffic from VM's and dockers (even using pipework, not sure about docker networking) started to come from my unraid host ip on eth0. This caused havoc in my system as low priority traffic was considered high priority as it was coming from my unraid ip.
I will put the Docker networking testing on hold again as the trouble is not worth it while I have a solution that currently works.