Ubuntu 20.04: Connect to Xfce desktop environment via XRDP

#!/bin/sh -e

sudo apt install -y xrdp
sudo sed -e 's/^new_cursors=true/new_cursors=false/g' \
     -i /etc/xrdp/xrdp.ini
sudo systemctl enable xrdp
sudo systemctl restart xrdp

echo "xfce4-session" > ~/.xsession
D=/usr/share/xfce4:/usr/share/xubuntu:/usr/local/share
D=${D}:/usr/share:/var/lib/snapd/desktop:/usr/share
cat <<EOF > ~/.xsessionrc
export XDG_SESSION_DESKTOP=xubuntu
export XDG_DATA_DIRS=${D}
export XDG_CONFIG_DIRS=/etc/xdg/xdg-xubuntu:/etc/xdg:/etc/xdg
EOF

sudo mv /usr/bin/light-locker /usr/bin/light-locker.orig
cat <<EOF | sudo tee /usr/bin/light-locker
#!/bin/sh

# The light-locker uses XDG_SESSION_PATH provided by lightdm.
if [ ! -z "\${XDG_SESSION_PATH}" ]; then
  /usr/bin/light-locker.orig
else
  # Disable light-locker in XRDP.
  true
fi
EOF
sudo chmod a+x /usr/bin/light-locker