instructables website a good startler for 10.
The cautious message is be wary when drilling holes due to whats behind / buried in the insulation & the harm leaking refrigerant poses.
Pauls glass shelf light shining position makes great sense (less work) & we know its toughened glass.
If I were to go drill free, I'd plan around the door & run stuff through a crack in the magnetic closure strip & bodge a simple pull tight-ish closure maybe some self adhesive hooks & a stretchy band (thick hair band) ?? ..& not worry about perfection till I had more time & inclination.

Necessity / bodgineering..mother of invention, & all that.