feat: support x11vnc args - X11VNC_ARGS (bug #101)

Docker env X11VNC_ARGS

Dockerfile.amd64

@@ -17,7 +17,7 @@ RUN apt-get update \
         supervisor nginx sudo vim-tiny net-tools zenity xz-utils \
         dbus-x11 x11-utils alsa-utils \
         mesa-utils libgl1-mesa-dri \
-        lxde xvfb x11vnc \
+        lxde xvfb x11vnc=0.9.16 \
         gtk2-engines-murrine gnome-themes-standard gtk2-engines-pixbuf gtk2-engines-murrine arc-theme \
         firefox chromium-browser \
         ttf-ubuntu-font-family ttf-wqy-zenhei \

README.md

@@ -120,6 +120,7 @@ Troubleshooting and FAQ
 1. boot2docker connection issue, https://github.com/fcwu/docker-ubuntu-vnc-desktop/issues/2
 2. Multi-language supports, https://github.com/fcwu/docker-ubuntu-vnc-desktop/issues/80
 3. Autostart, https://github.com/fcwu/docker-ubuntu-vnc-desktop/issues/85
+4. x11vnc arguments(multiptr), https://github.com/fcwu/docker-ubuntu-vnc-desktop/issues/101
 
 License
 ==================

image/startup.sh

@@ -8,6 +8,10 @@ if [ -n "$VNC_PASSWORD" ]; then
     export VNC_PASSWORD=
 fi
 
+if [ -n "$X11VNC_ARGS" ]; then
+    sed -i "s/^command=x11vnc.*/& ${X11VNC_ARGS}/" /etc/supervisor/conf.d/supervisord.conf
+fi
+
 if [ -n "$RESOLUTION" ]; then
     sed -i "s/1024x768/$RESOLUTION/" /usr/local/bin/xvfb.sh
 fi