Added headless configuration to Xorg

Dockerfile.m4

@@ -418,7 +418,7 @@ ENV UNPRIVILEGED_USER_SHELL=/bin/bash
 ENV XRDP_TLS_KEY_PATH=/etc/xrdp/key.pem
 ENV XRDP_TLS_CRT_PATH=/etc/xrdp/cert.pem
 ENV ENABLE_XDUMMY=false
-ENV VGL_DISPLAY=:0
+ENV VGL_DISPLAY=:0.0
 ## Use Adwaita theme in QT applications
 ENV QT_STYLE_OVERRIDE=Adwaita
 
@@ -469,6 +469,7 @@ COPY --chown=root:root ./scripts/bin/ /usr/local/bin/
 
 # Copy config
 COPY --chown=root:root ./config/ssh/ /etc/ssh/
+COPY --chown=root:root ./config/X11/ /etc/X11/
 COPY --chown=root:root ./config/xrdp/ /etc/xrdp/
 COPY --chown=root:root ./config/skel/ /etc/skel/
 COPY --chown=root:root ./config/pulse/ /etc/pulse/

config/X11/xorg.conf.d/10-headless.conf

@@ -0,0 +1,17 @@
+Section "Monitor"
+	Identifier "Monitor0"
+	HorizSync 28.0-80.0
+	VertRefresh 48.0-75.0
+	Modeline "1920x1080" 172.80 1920 2040 2248 2576 1080 1081 1084 1118
+EndSection
+
+#Section "Device"
+#	Identifier "Device0"
+#	Driver "dummy"
+#EndSection
+
+#Section "Screen"
+#	Identifier "Screen0"
+#	Device "Device0"
+#	Monitor "Monitor0"
+#EndSection

scripts/service/xdummy/run

@@ -1,4 +1,4 @@
 #!/bin/sh
 
 exec 2>&1
-exec /usr/bin/Xorg -noreset -nolisten tcp +extension GLX +extension RANDR +extension RENDER -logfile /var/log/xdummy.log :0
+exec /usr/bin/Xorg -noreset -nolisten tcp +extension GLX +extension RANDR +extension RENDER -logfile /var/log/xdummy.log :0.0