chore(server): use localhost sub domain (#13012)

reduce dnsmasq service



#### PR Dependency Tree


* **PR #13012** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **Documentation**
* Updated instructions to use the domain `affine.localhost` instead of
`dev.affine.fail`.
* Simplified setup steps by removing references to DNS service
configuration and custom DNS server entries.

* **Chores**
* Removed DNS server configuration and related files from the
development environment setup.
  * Updated example descriptions to reflect the new domain.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

.docker/dev/compose.yml.example

@@ -73,17 +73,6 @@ services:
   #     timeout: 10s
   #     retries: 120
 
-  # dns:
-  #   image: strm/dnsmasq
-  #   volumes:
-  #     - ./dnsmasq.conf:/etc/dnsmasq.d/local.conf
-  #   ports:
-  #     - "53:53/udp"
-  #   cap_add:
-  #     - NET_ADMIN
-  #   depends_on:
-  #     - nginx
-
   # nginx:
   #   image: nginx:alpine
   #   volumes: