Kristina Maltseva focused on stabilizing and maintaining the Netcracker/qubership-envgene container environment, addressing reliability and security through targeted Docker image hygiene. She improved the Dockerfile by ensuring essential tools like tar were present while removing unused dependencies such as unzip, effectively reducing the image’s surface area and potential attack vectors. Her work emphasized reproducibility and maintainability, aligning the container’s runtime environment with deployment requirements. Using skills in containerization and DevOps, Kristina’s contributions centered on bug fixing rather than feature development, demonstrating a methodical approach to dependency management and runtime consistency, with all changes implemented directly in Dockerfile for transparent, low-risk deployment.