[Feat] Add domain suffix to host record

[SummonHIM]

Add domain suffix based on network name for containers in custom networks

This modification will prevent duplicate hosts entries caused by identical service names.

Duplicate entries example:

172.19.0.3    authentik-server-1   server   xxx
172.18.0.3    xxx   gitea-server-1   server

By using network name as domain suffix (effective solution):

172.19.0.3    authentik-server-1   server.authentik_default   xxx
172.18.0.3    xxx   gitea-server-1   server.gitea_internal

---

Translate by GPT, sorry for bad english.