Note on setting up VNC server for ldog account on Rockylinux 8 PC

I setup a VNC at boot time using the local /home2/irtf account on RL8 ldog computer.
(didn't want to disturbute the NIS ldog account with VNC stuff).
To run the ldog software, will connect to this VNC, then 'su - ldog', etc. 

Start the vncserver from command line (soon depreciated)

In the user account:
   .vnc/passwd          # created by stefan in monthly passwd change
   .vnc/xstartup        # startup script for /bin/vncserver.

Tested to make sure this worked: 
  - /bin/vncserver         # start vncserver
  - turn off power saving, and screen saver.

VNC via systemd

In user account:
   .vnc/passwd          # created by stefan in monthly passwd change
   .vnc/config          # tiger vnc config, ie: geometry, rfbport
   .vnc/xstartup        # script to start desktop (not needed by systemd, but here for /bin/vncserver.

# assign a session ID to the user
vi /etc/tigervnc/vncserver.users
   :1=ldog

 # to start and enable the service

   systemctl enable vncserver@:1.service --now

   # to verify the service is started:
   systemctl status vncserver@:1.service

   # to restart the service
   systemctl restart vncserver@:1.service

To start the ldog software

   1. connect to vnc:  vnc ldogh:16000  # used the project password
   2. open xterm: 
       Click on Activities (upper right)
       Chick on Show Application on dock (botton 3x3 dots).
       Click on XTerm

   3. Run the ldog software in the xterm:
      su - ldog
      cd current/ldog  
      ldog_ic