apt-get install xorg xserver-xorg xdm xfce4 xfce4-goodies autocutsel

wget https://sourceforge.net/projects/turbovnc/files/2.1.1/turbovnc_2.1.1_amd64.deb/download
dpkg -i download

## vi /etc/X11/xdm/xdm-config
## ...
!DisplayManager.requestPort:    0
## end of file

## vi /etc/X11/xdm/Xaccess
## ...
*             #any host can get a login window
## ...
## end of file

## vi /etc/X11/xdm/Xservers
## ...
#:0 local /usr/bin/X :0 vt7 -nolisten tcp
## end of file

## vi /etc/X11/xdm/Xsetup
## ...
autocutsel -fork
## end of file

adduser vnc
su vnc
/opt/TurboVNC/bin/vncsever
/opt/TurboVNC/bin/vncsever -kill :1
exit

## vi /etc/systemd/system/xvnc.socket
[Unit]
Description=XVNC Server

[Socket]
ListenStream=5900
Accept=yes

[Install]
WantedBy=sockets.target
## end of file

## vi /etc/systemd/system/xvnc@.service
[Unit]
Description=XVNC Per-Connection Daemon

[Service]
ExecStart=-/opt/TurboVNC/bin/Xvnc -inetd -query localhost -once -securitytypes vnc -rfbport 5900 -rfbauth /home/vnc/.vnc/passwd
User=vnc
StandardInput=socket
StandardError=syslog
## end of file

systemctl enable xvnc.socket

reboot