I got some of my build time customizations working by adding some commands to customize-image.sh. The 2 I haven't figured out yet are the ones below. If anyone has any suggestions, they would be greatly appreciated. I am building a legacy focal desktop image for Rock 64.
1. I need the image to come up with a black screen background and no background image displayed. The latest thing I tried calling the following in customize-image.sh, but it still didn't work:
DISPLAY=":0" gsettings set org.gtk.Settings.ColorChooser custom-colors "[(0.5, 0.5, 0.5, 1.0)]"
DISPLAY=":0" gsettings set org.gtk.Settings.ColorChooser selected-color "(true, 0.0, 0.0, 0.0, 1.0)"
2. I don't want the top menu bar to be visible. I just want my app's window to be displayed and nothing else. How do I accomplish that at build time?