chimney script: check if chimney script run on the same server as the domain

```
IP=$(dig +short blimp8mzfc.zus.network)
CURRENT_IP=$(curl ipv4.icanhazip.com)

if [ "$EXPECTED_IP" != "$CURRENT_IP" ]; then
echo "the ip of this server is not pointed to domain: blimp8mzfc.zus.network. Please point the domain and try again"
exit 1
fi
```

This script can be used to check

Look for existing shell scripts in the repository, especially those related to server or domain setup. The script needs to fetch the domain's IP via dig, compare it to the server's public IP from curl, and exit with an error message if they differ. Test by running on a server and verifying the condition works.

Written by the indexing model from the issue text.