As far as i understood with the following rule:

ACCEPT     tcp  --  anywhere             172.17.0.4           tcp dpt:25565

ubuntu allows connection via port 25565 but only to 172.17.0.4, but i want it to be reachable from anywhere.
Ive tried something like

sudo iptables -A INPUT -p tcp --dport 25565 -j ACCEPT -d anywhere

but that doesn't work. Am I missing something? Maybe im totally wrong i don't know much about networking. My server i want to reach runs in a docker container if that makes any differences.