Usage with docker container?

[sebascha]

This may be a stupid question but how would update url with the local container look like?

[bulburDE]

It depends how you have configured your docker container, but here is an example that may help. I have created the container using the following docker-compose.yml:

version: '3.7'

services:
    app:
        container_name: cloudflare-dyndns
        ports:
            - 8504:80
        image: ghcr.io/l480/cloudflare-dyndns:latest

The resulting update-url is: http://<server host name or ip address>:8504?token=<pass>&record=www&zone=example.de&ipv4=<ipaddr>&ipv6=<ip6addr>

You have to change adapt <server host name or ip address> to your server. The other placeholders are filled in by fritz.