That was my thought too that I failed to express.
I ran docker images
and it only shows the one image for pihole, and no other container uses that port.
..Oh right. I forgot I switched it back to the router while I was waiting on a reply.
After switching it back, still the same error. .
Only way I can get the container setup and run is by changing it from Bridge to bond0 since my Ethernet on the server is being bonded.