Rescue! Please help!!

I found this little cutie (calling it Charlie for now) right outside my door, not moving at all even when I (very very gently) nudged the tail. I have Charlie in a plastic container and I keep popping the lid on and off because idk what kind of oxygen situation it needs to survive. I don’t know anything about reptiles so can anyone please tell me what to do? I don’t want this little guy/gal to die. It’s night time, rainy, and in the low 50s Fahrenheit. I’m in south Louisiana