Normalmente, eu verificaria o apache2 / httpd / nginx, ou qualquer que seja o seu webServer, para configurar o domínio virtual. Ao fazer isso, você pode pedir ao seu servidor da Web para rotear a solicitação HTTP para um local específico, dependendo do nome do host inserido pelo usuário final.
A configuração do apache2 deve ser semelhante a essa (específica para o webmin).
Com example1.com, seu nome de domínio, 10000, a porta para webmin e /var/www/html , o diretório principal do webmin.
/etc/apache2/sites-available/000-default.conf :
<VirtualHost example1.com:10000>
# The ServerName directive sets the request scheme, hostname and port that
# the server uses to identify itself. This is used when creating
# redirection URLs. In the context of virtual hosts, the ServerName
# specifies what hostname must appear in the request's Host: header to
# match this virtual host. For the default virtual host (this file) this
# value is not decisive as it is used as a last resort host regardless.
# However, you must set it for any further virtual host explicitly.
#ServerName www.example.com
ServerAdmin webmaster@localhost
DocumentRoot /var/www/html
# Available loglevels: trace8, ..., trace1, debug, info, notice, warn, # error, crit, alert, emerg.
# It is also possible to configure the loglevel for particular
# modules, e.g.
#LogLevel info ssl:warn
ErrorLog ${APACHE_LOG_DIR}/error.log
CustomLog ${APACHE_LOG_DIR}/access.log combined
# For most configuration files from conf-available/, which are
# enabled or disabled at a global level, it is possible to
# include a line for only one particular virtual host. For example the
# following line enables the CGI configuration for this host only
# after it has been globally disabled with "a2disconf".
#Include conf-available/serve-cgi-bin.conf
</VirtualHost>