Cant reach Ubuntu host running Docker - docker

Question

I'm having an issue with a Ubuntu 22.10 host on which I installed Docker and have several services running (docker-elk).
I'm also running a simple "Hello world" HTTP server on port 3000:
GET http://localhost:3000 -> "Hello world"
I can access my Docker services for another computer on the same network using:
http://192.168.3.10:5601 -> Loads Kibana UI running in Docker on Host
However, I cannot access my simple HTTP server from that same computer:
http://192.168.3.10:3000 -> Refused to connect
From reading here looks like Docker makes some changes to iptables which probably has something to do with this:
I tried running that command, no success. Now iptables --list gives me:
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain FORWARD (policy DROP)
target prot opt source destination
DOCKER-USER all -- anywhere anywhere
DOCKER-ISOLATION-STAGE-1 all -- anywhere anywhere
ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED
DOCKER all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
Chain DOCKER (1 references)
target prot opt source destination
Chain DOCKER-ISOLATION-STAGE-1 (1 references)
target prot opt source destination
DOCKER-ISOLATION-STAGE-2 all -- anywhere anywhere
RETURN all -- anywhere anywhere
Chain DOCKER-ISOLATION-STAGE-2 (1 references)
target prot opt source destination
DROP all -- anywhere anywhere
RETURN all -- anywhere anywhere
Chain DOCKER-USER (1 references)
target prot opt source destination
ACCEPT all -- anywhere anywhere
RETURN all -- anywhere anywhere
I have previously "allowed" those ports using ufw but when that didnt work I also tried completely disabling the firewall using:
sudo ufw disable
sudo iptables -F
Even then I still cant reach my http server from the other computer on the same network.