1. Visit the following URL to find the wallpaper you need to make this possible: 98.246.187.61:47224/hide_the_dock.html
2. Tap and hold on the wallpaper, then select “Save Image”
Go into the Photos app, find the wallpaper you just saved, then tap the share button
3. Tap “Use as Wallpaper”
4. Tap “Still,” then tap “Set”
5. Choose “Set Home Screen” and note that you can use any wallpaper for your lock screen
6. Return to the home screen
Done, now the Dock bar background disappears