hotkeys to adjust screen brightness

roles/i3/files/config

@@ -34,6 +34,10 @@ bindsym XF86AudioLowerVolume exec --no-startup-id pactl set-sink-volume @DEFAULT
 bindsym XF86AudioMute exec --no-startup-id pactl set-sink-mute @DEFAULT_SINK@ toggle && $refresh_i3status
 bindsym XF86AudioMicMute exec --no-startup-id pactl set-source-mute @DEFAULT_SOURCE@ toggle && $refresh_i3status
 
+# Screen brightness
+bindsym XF86MonBrightnessUp exec --no-startup-id brightnessctl set +10%
+bindsym XF86MonBrightnessDown exec --no-startup-id brightnessctl set 10%-
+
 # Use Mouse+$mod to drag floating windows to their wanted position
 floating_modifier $mod
 

roles/i3/tasks/main.yml

@@ -10,6 +10,7 @@
       - xss-lock
       - arandr
       - autorandr
+      - brightnessctl
 - name: Create i3 config directory
   file:
     path: ~/.config/i3