Fix DNS & Install SSL on Next.js

I need help fixing a DNS error and installing SSL certificates on my Next.js project hosted with Coolify.

Current Issues:
- Getting "no available server" error.
- Validating DNS failed.

Requirements:
- Correctly configure DNS records for domain.ai to point to host.docker.internal.
- Install provided SSL certificates.

Ideal Skills and Experience:
- Proficient in DNS management, especially with Hostinger.
- Experience with Next.js and server configurations.
- Familiarity with Coolify and SSL certificate installation.

Coolify Error message:
Validating DNS failed.
Make sure you have added the DNS records correctly.
domain.ai->host.docker.internal
Check this documentation for further help.