Secure container Epsilon - The Official Escape from Tarkov Wiki
How To Obtain Kappa Container Tarkov And Other FAQs - Game Specifications
How to get Secure Containers in Escape from Tarkov | AllGamers
I solved the Kappa problem. Carrot Container replaces it and Kappa is a 71 unlock. Donut because it's hilarious... (Carrot because it's the carrot on a stick to keep people questing!) :
How To Get The Kappa Container - Escape From Tarkov - YouTube