[add] : Added wallpaper

Author: Hayao0819

airootfs/root/customize_airootfs.sh

@@ -21,6 +21,9 @@ cp -aT /etc/skel/ /home/arch/
 DISABLED
 
 [[ -d /usr/share/calamares/branding/manjaro ]] && rm -rf /usr/share/calamares/branding/manjaro
+rm /usr/share/backgrounds/xfce/xfce-stripes.png
+ln -s /usr/share/backgrounds/alter.png /usr/share/backgrounds/xfce/xfce-stripes.png
+chmod 644 /usr/share/backgrounds/alter.png
 
 sed -i 's/#\(PermitRootLogin \).\+/\1yes/' /etc/ssh/sshd_config
 sed -i "s/#Server/Server/g" /etc/pacman.d/mirrorlist