Wildcard for 3rd level domains

[Wolwer1nE]

Hi! Here is what I got

Current Setup

• Rails application with implemented user subdomain functionality
• Kamal 2 deployment with Thruster reverse proxy
• DNS records configured for wildcard domain
• Current deploy.yml configuration:

proxy: 
  ssl: true
  host: mysite.com

Goal
Enable support for user-specific subdomains in the format:

name.mysite.com
another_name.mysite.com

What is the correct approach to handle wildcard subdomains with Kamal/Thruster?

Option 1: Remove host from deploy.yml completely (concerns about SSL certificate compatibility)
Option 2: Use wildcard notation '*.mysite.com'
Option 3: There is no such possibility, go back to nginx/traefik and suffer.

Kamal version: 2.2.2
Rails version: 8.0.0.beta1
Thruster version: 0.1.8

[viktorianer]

Related to #969.