[gnome-build-meta.wiki] Update Bootable images

[Valentin David <valentindavid src gnome org>]

commit c0627829abe50169fa38148c29f6812a50b222a9
Author: Valentin David <me valentindavid com>
Date:   Wed Apr 8 15:05:48 2020 +0000

    Update Bootable images

 Bootable-images.md | 8 ++++++++
 1 file changed, 8 insertions(+)
---
diff --git a/Bootable-images.md b/Bootable-images.md
index 707f121..bec10d8 100644
--- a/Bootable-images.md
+++ b/Bootable-images.md
@@ -180,6 +180,14 @@ Adding a hard drive: `-drive file=disk.qcow2,format=qcow2,media=disk`
 
 Adding a CD-ROM: `-drive file=cd.iso,format=raw,media=cdrom`
 
+#### Using SPICE protocol instead of Gtk interface
+
+Instead of `-display gtk,gl=on`, one can use:
+
+`-device virtio-serial-pci -device virtserialport,chardev=spicechannel0,name=com.redhat.spice.0 -chardev 
spicevmc,id=spicechannel0,name=vdagent -spice 
"addr=${XDG_RUNTIME_DIR:-/tmp}/vm.sock,unix,disable-ticketing,gl=on"`
+
+Then you can `spice+unix://${XDG_RUNTIME_DIR:-/tmp}/vm.sock`
+
 ## Appendix
 
 ### nr_entries is too big