Only Listening to either ipv4 or ipv6 not both

[TheGameProfi]

Describe the bug
When deploying Grimoire I can set the HOST var to a value but it's not possible to make it listen two both ipv4 and ipv6 at the same time

To Reproduce
Steps to reproduce the behavior:

1. Deploy the Server
2. Try connecting via ipv4 and ipv6
3. See that only one Works

Expected behavior
It should be possible to have the Server listening on both ipv4 and ipv6 at the same time

Additional context
Deployed via Docker, but should be the same for all methods