Alien: Specimen

With only her loyal red Dobermann guard dog, Maggie, to keep her company, the Weyland-Yutani Corporation botanist, Julie, is left all alone to tackle the endless night shift in Greenhouse 112 on the colonised planet, LV-492. But, in the dead of night, something catches Maggie's attention, triggering the specimen-filled facility's containment alarm, and before long, Julie finds herself trapped. Now, unable to override the lockdown, Maggie must find the intruder, in a dangerous, nerve-racking cat-and-mouse game. What was inside the lidless barrel of soil?