How to properly setup multitenant (subDomains) in a LEMP/Laravel 5.8 for local (DEV) environment?

Question

I am running ubuntu 16.04 with PHP 7.1, NGINX and Laravel 5.8.

My goal is to create a multitenant app in my local (dev) environment.

The root url is myapp.com. I want to retrieve from the URL: account1.myapp.com, account2.myapp.com, ... and display back the string account1, or account2, ... .

After passing trough some posts:

1. Use /etc/hosts to direct wildcard domain name
2. How to put wildcard entry into /etc/hosts?
3. Multi-Tenant Laravel on Ubuntu
4. Wildcard in /etc/hosts file

I've learned that I should:

1. Install and setup dnsmasq /etc/dnsmasq.conf (address=/myapp.com/127.0.0.1)
2. Set the routes in Laravel to retrieve the subdomains
3. Set the hosts (127.0.0.1 myapp.com)
4. Set the /etc/nginx/sites-available/myapp.com.conf (server_name *.myapp.com myapp.com;)

After all that steps, the url myapp.com is working good Route::get('/', 'HomeController@index');, but the url http://account1.myapp.com/, still not working (This site can’t be reached)

I can't figure out what I am doing wrong. Some help?

That is the code I have so far:

ROUTE

Route::domain('{account}.myapp.com/')->group(function ($account) {
    return $account;
});

Auth::routes();

Route::get('/', 'HomeController@index');

/etc/hosts

127.0.0.1       myapp.com

/etc/nginx/sites-available/myapp.com.conf

server {
    listen 80;
    server_name *.myapp.com myapp.com;
    root /var/www/vhosts/myapp.com/public;

    index index.html index.htm index.php;

    charset utf-8;

    location / {
        try_files $uri $uri/ /index.php?$query_string;
    }

    location = /favicon.ico { access_log off; log_not_found off; }
    location = /robots.txt  { access_log off; log_not_found off; }

    access_log off;
    error_log  /var/log/nginx/myapp.com-error.log error;

    error_page 404 /index.php;

    sendfile off;

    location ~ \.php$ {
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        fastcgi_pass unix:/var/run/php/php7.1-fpm.sock;
        fastcgi_index index.php;
        include fastcgi_params;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_intercept_errors on;
        fastcgi_buffer_size 16k;
        fastcgi_buffers 4 16k;
    }

    location ~ /\.ht {
        deny all;
    }

    client_max_body_size 1000m;
}

/etc/dnsmasq.conf

# Configuration file for dnsmasq.
#

address=/myapp.com/127.0.0.1

# Format is one option per line, legal options are the same ...
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