feat: support VNC_PASSWORD

Author: dorowu-qnap

README.md

@@ -25,6 +25,24 @@ Browse http://127.0.0.1:6080/
 <img src="https://raw.github.com/fcwu/docker-ubuntu-vnc-desktop/master/screenshots/lxde.png" width=400/>
 
 
+Connect with VNC Viewer and protect by VNC Password
+==================
+
+Forward VNC service port 5900 to host by
+
+```
+docker run -it --rm -p 6080:80 -p 5900:5900 dorowu/ubuntu-desktop-lxde-vnc
+```
+
+Now, open the vnc viewer and connect to port 5900. If you would like to protect vnc service by password, set environment variable `VNC_PASSWORD`, for example
+
+```
+docker run -it --rm -p 6080:80 -p 5900:5900 -e VNC_PASSWORD=mypassword dorowu/ubuntu-desktop-lxde-vnc
+```
+
+A prompt will ask password either in the browser or vnc viewer.
+
+
 Troubleshooting
 ==================
 

image/startup.sh

@@ -12,6 +12,13 @@ chown -R ubuntu:ubuntu /home/ubuntu
 sudo -u ubuntu -i bash -c "mkdir -p /home/ubuntu/.config/pcmanfm/LXDE/ \
     && cp /usr/share/doro-lxde-wallpapers/desktop-items-0.conf /home/ubuntu/.config/pcmanfm/LXDE/"
 
+if [ -n "$VNC_PASSWORD" ]; then
+    echo -n "$VNC_PASSWORD" > /.password1
+    x11vnc -storepasswd $(cat /.password1) /.password2
+    chmod 400 /.password*
+    sed -i 's/^command=x11vnc.*/& -rfbauth \/.password2/' /etc/supervisor/conf.d/supervisord.conf
+fi
+
 cd /usr/lib/web && ./run.py > /var/log/web.log 2>&1 &
 nginx -c /etc/nginx/nginx.conf
 exec /bin/tini -- /usr/bin/supervisord -n