I’m not on Docker, but since you haven’t gotten any responses yet… I’ve seen several of this type of remote issue come through for Docker installs. Adjustments for how Docker handles networking have typically been able to resolve the issue. Here are a couple of discussions for how people solved:
Eero does some interesting things with it’s IP range - appears to default to a subnet mask of /22, and so 192.168.4.0-192.168.7.255 are valid. Note this if setting “LAN Networks” in Plex. That still doesn’t explain the 192.168.0.1 - typically you would expect that to be a gateway/router address. Possibly a guest network? Have you double checked on the actual devices themselves, that Plex is saying are 192.168.0.1, to see what IP addresses they are showing?
