making a tweak to Apache2 default-server.conf to add FOOTER.html as a README directive
as root:

1) cp /etc/apache2/default-server.conf /etc/apache2/2018-08-31-default-server.conf-bak
2) vi /etc/apache2/default-server.conf
3)   e.g.  add:  ReadmeName FOOTER.html

--> grep -i readme /etc/apache2/default-server.conf
            ReadmeName README.html
insert line   -->         ReadmeName FOOTER.html
            IndexIgnore README.html favicon.ico HEADER.html FOOTER.html readme.html footer.html header.html 

4) create a custom script to stop, test, enable, start and check status: 

    COMMANDS NEEDED:
    systemctl stop apache2 ; 
    apachectl configtest ; 
    systemctl enable apache2 ; 
    systemctl start apache2 ; 
    systemctl status apache2  (this last one is optional)


  vi /superluser/bin/restart-apache2  (NOTE:  place all the commands on ONE line to minimize user impact)

    #!/bin/bash
    systemctl stop apache2 ; apachectl configtest ; systemctl enable apache2 ; systemctl start apache2 ; systemctl status apache2

5) --> sh /superluser/bin/restart-apache2

Syntax OK
● apache2.service - The Apache Webserver
   Loaded: loaded (/usr/lib/systemd/system/apache2.service; enabled; vendor preset: disabled)
   Active: active (running) since Fri 2018-08-31 12:43:05 PDT; 4ms ago
 Main PID: 7582 (httpd-prefork)
   Status: "Processing requests..."
    Tasks: 6
   CGroup: /system.slice/apache2.service
           ├─7582 /usr/sbin/httpd-prefork -DSYSCONFIG -C PidFile /var/run/httpd.pid -C Include /etc/apache2/sysconfig.d//loadmodule.conf -C Include /etc/apach...
           ├─7590 /usr/sbin/httpd-prefork -DSYSCONFIG -C PidFile /var/run/httpd.pid -C Include /etc/apache2/sysconfig.d//loadmodule.conf -C Include /etc/apach...
           ├─7591 /usr/sbin/httpd-prefork -DSYSCONFIG -C PidFile /var/run/httpd.pid -C Include /etc/apache2/sysconfig.d//loadmodule.conf -C Include /etc/apach...
           ├─7592 /usr/sbin/httpd-prefork -DSYSCONFIG -C PidFile /var/run/httpd.pid -C Include /etc/apache2/sysconfig.d//loadmodule.conf -C Include /etc/apach...
           ├─7594 /usr/sbin/httpd-prefork -DSYSCONFIG -C PidFile /var/run/httpd.pid -C Include /etc/apache2/sysconfig.d//loadmodule.conf -C Include /etc/apach...
           └─7595 /usr/sbin/httpd-prefork -DSYSCONFIG -C PidFile /var/run/httpd.pid -C Include /etc/apache2/sysconfig.d//loadmodule.conf -C Include /etc/apach...

Aug 31 12:43:05 yourservernamehere systemd[1]: Starting The Apache Webserver...
Aug 31 12:43:05 yourservernamehere systemd[1]: Started The Apache Webserver.