Worked on the srl-labs/containerlab project to enhance the reliability of Docker container shutdowns by addressing a critical overflow issue in the conversion of stop timeouts to seconds. This fix ensures that containers now undergo a proper graceful shutdown process, reducing the risk of abrupt terminations and improving stability for production environments. The solution was implemented using Go, leveraging expertise in containerization and Docker runtime internals. By focusing on this targeted bug fix, the work contributed to more predictable and robust container lifecycle management, directly supporting operational reliability for users deploying containerized workloads with containerlab in demanding scenarios.