See this page for more details on how to install Apache HTTP Server:
https://help.ubuntu.com/lts/serverguide/httpd.html

$ sudo apt install apache2

Change the folder permissions:

$ sudo chmod -R 775 /var/www/html/
$ sudo chown -R www-data:www-data /var/www/html/

Create a symbolic link of the log folder:

$ sudo ln -s /var/log/apache2/ /etc/apache2/logs

Configure your server name.
Add 'ServerName YOUR_SERVER_NAME' in '/etc/apache2/apache2.conf' file:

$ sudo nano /etc/apache2/apache2.conf

ServerName mtitekserver

Restart Apache HTTP Server:

$ sudo service apache2 restart

Verify the version of Apache HTTP Server:

$ apache2ctl -V

Server version: Apache/2.4.29 (Ubuntu)
...

Access the default page of Apache HTTP Server: http://localhost

See this page for more details on how to configure virtual hosts:
https://httpd.apache.org/docs/current/vhosts/examples.html

Change the default port:

$ sudo vi /etc/apache2/ports.conf

Listen 8880

You may have to modify the port in the following file:

$ sudo vi /etc/apache2/sites-available/000-default.conf

<VirtualHost *:8880>

Restart Apache HTTP Server:

$ sudo service apache2 restart

Change the DocumentRoot option in the following file:

$ sudo vi /etc/apache2/sites-available/000-default.conf

#DocumentRoot /var/www/html
DocumentRoot /var/www/mtitek

Restart Apache HTTP Server:

$ sudo service apache2 restart