# sudo su
# apt-get install shellinabox apache2
# nano /etc/default/shellinabox

SHELLINABOX_ARGS="--no-beep --disable-ssl --localhost-only --service /:0:0:/root/webmin/:/root/webmin/webmin.sh"

# systemctl restart shellinabox.service
# nano /etc/apache2/sites-enabled/000-default.conf

<VirtualHost *:80>
...
   <Location /wifi>
   ProxyPass http://localhost:4200/
   Order allow,deny
   Allow from all
   </Location>
...
</VirtualHost>


# a2enmod proxy_http
# apachectl restart
# cd
# mkdir webmin
# cd webmin
# wget https://raw.githubusercontent.com/Telefonorosso/rpi-wifi-in-a-box/master/webmin.sh
# wget https://raw.githubusercontent.com/Telefonorosso/rpi-wifi-in-a-box/master/en.locale.sh
# chmod +x webmin.sh