Replace the bulb with an led version. It draws so little current it wont matter for days. I leave mine open all day sometimes when I'm working on the interior.
This is probably the easiest/best option.
If the only dome light is the one above the rear window, you can find the orange feed wire that plugs into the fuse box and put a toggle switch on that. If you have optional lights under the dash, you will need to combine the orange power feeds and wire them into a switch.
The problem with pulling or putting a switch on the fuse is the other things powered by that circuit. Usually the cigarette lighter and clocks are powered on the courtesy fuse.
I’d just replace all the regular incandescent bulbs with LED lamps. They draw a tiny fraction of the current, they operate at a much lower temperature (no more scorched dome lamp lenses) and last forever. You could leave the dome lamp on for a week and the truck would start, assuming the battery is good.
