Enabling HTTPS (SSL) for Laravel Sail using Caddy

CaddyController.php

<?php
# app/Http/Controllers/CaddyController.php

namespace App\Http\Controllers;

use App\Store;
use Illuminate\Http\Request;

class CaddyController extends Controller
{
    public function check(Request $request)
    {
        $authorizedDomains = [
            'laravel.test',
            'www.laravel.test',
            // Add subdomains here
        ];

        if (in_array($request->query('domain'), $authorizedDomains)) {
            return response('Domain Authorized');
        }

        // Abort if there's no 200 response returned above
        abort(503);
    }
}

Caddyfile

# docker/Caddyfile

{
    on_demand_tls {
        ask http://laravel.test/caddy-check
    }
    local_certs
}

:443 {
    tls internal {
        on_demand
    }

    reverse_proxy laravel.test {
        header_up Host {host}
        header_up X-Real-IP {remote}
        header_up X-Forwarded-For {remote}
        header_up X-Forwarded-Port {server_port}
        header_up X-Forwarded-Proto {scheme}

        health_timeout 5s
    }
}

docker-compose.yml

services:
  caddy:
      image: caddy:latest
      restart: unless-stopped
      ports:
          - '80:80'
          - '443:443'
      volumes:
          - './docker/Caddyfile:/etc/caddy/Caddyfile'
          - sailcaddy:/data
          - sailcaddy:/config
      networks:
          - sail
          
  # Remove "ports" from laravel.test service
        
volumes:
    sailcaddy:
        driver: local

web.php

<?php
# routes/web.php

Route::get('/caddy-check', 'CaddyController@check');