If it has the buttons in the door jamb for the dome lights pull them and check them. Some have exposed connectors on the backside and can get loose in the hole and ground. Also check the wiring and boots where the harness comes from the A-pillar into the door, maybe look around behind the kick panel and fuse box. Sounds like the issue is related to the door opening and closing. Maybe a skinned wire from the harness being packed too tight.
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