Extremely cold apocalypse: I use a cornucopia to store billions of supplies

(Rebirth + space + unlimited copying + decisive killing + no heroine + one person and one dog)
If I can copy infinitely, how should you deal with it?
 The strongest solar flare in the history of human civilization erupted.
 Scientific and technological civilization was destroyed by the geomagnetic storm sweeping the world.
Blue Star is plunged into an extremely cold apocalypse.
 More than 90% of species have become extinct.
 The surviving plants and animals began to undergo mutations.
 Lack of food? I can copy.
Lack of medicine? I can copy.
 What is missing? Just tell me and I can copy it!
Lin Shi was reborn and returned to three months before the end, opening up the cornucopia of ancestral heritage!
 Get room for upgrades and a cornucopia of items that can be copied!
 Harding massive amounts of supplies.
 Create the ultimate refuge.
 The beginning of the end of the world is the day when the killing begins.
 Humanity’s battle for survival! I am coming!