I had that problem with the headliner around the manual sunroof handle. I cut a piece of translucent plastic (coffee can lid, Tupperware, whatever) the plastic piece extends about 1/2" larger than the handle mechinisum all around and is tucked under the mechanism. It holds the vinyl and Looks tidy too. Dont know if this would work around the dome light but it might.
1985 Euro 300TD 5 spd 218K
1985 Euro 240D 5 spd 120K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
1964 VW bug
Giving money and power to government is like giving whiskey and car keys to teenage boys. P.J. O'Rourke