Fix dbus, xserver and pulseudio startup errors

docker/base/Dockerfile

@@ -51,6 +51,10 @@ ENV LANGUAGE en_US:en
 ENV LC_ALL en_US.UTF-8
 ENV TZ UTC
 
+ARG USERNAME=admin
+ARG USER_UID=1000 
+ARG USER_GID=${USER_UID}
+
 #
 #Add dependencies
 #
@@ -59,11 +63,17 @@ RUN apt-get update; \
     apt-get install -y --no-install-recommends \
     #
     #Xserver 
-    wget ca-certificates xvfb dbus-user-session dbus-x11 libdbus-c++-1-0v5 xorg openbox\
+    wget vim ca-certificates software-properties-common gpg-agent xvfb dbus-user-session dbus-x11 libdbus-c++-1-0v5\
     #
     #Pulseaudio
     pulseaudio libcairo2 libxcb1 libxrandr2 libxv1 libopus0 libvpx6; \
     #
+    # workaround for an X11 problem: http://blog.tigerteufel.de/?p=476
+    #
+    mkdir /tmp/.X11-unix; \
+    chmod 1777 /tmp/.X11-unix; \
+    chown $USERNAME /tmp/.X11-unix/; \
+    #
     # Housekeeping
     #
     apt-get clean -y; \
@@ -77,10 +87,6 @@ RUN apt-get update; \
        /usr/share/man/* \
        /usr/share/local/*
 
-ARG USERNAME=admin
-ARG USER_UID=1000 
-ARG USER_GID=${USER_UID}
-
 #
 #Create a non-root user `admin`
 #
@@ -143,6 +149,10 @@ STOPSIGNAL SIGRTMIN+3
 COPY temp/warp /usr/bin/
 COPY docker/base/ffmpeg.sh /scripts/
 RUN chmod +x /scripts/ffmpeg.sh /usr/bin/warp
+
+COPY docker/base/dbus /usr/bin/dbus
+COPY docker/base/default.pa /etc/pulse/
+
 #
 #Copy the systemd.service file for starting the server
 #

docker/base/dbus

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+if [ ! -d /var/run/dbus ]; then
+  mkdir -p /var/run/dbus
+fi
+
+if [ -f /var/run/dbus/pid ]; then
+  rm -f /var/run/dbus/pid
+fi
+
+/usr/bin/dbus-daemon --nofork --print-pid --config-file=/usr/share/dbus-1/system.conf

docker/base/default.pa

@@ -0,0 +1,10 @@
+#!/usr/bin/pulseaudio -nF
+
+### Create virtual output device sink
+load-module module-null-sink sink_name=audio_output sink_properties=device.description="Virtual\ Audio\ Output"
+
+# Allow pulse audio to be accessed via TCP (from localhost only), to allow other users to access the virtual devices
+load-module module-native-protocol-unix socket=/tmp/pulseaudio.socket auth-anonymous=1
+
+### Make sure we always have a sink around, even if it is a null sink.
+load-module module-always-sink