Worked on the browserless/browserless repository to deliver a robust Docker shutdown flow for Node.js applications, focusing on reliable container lifecycle management. Addressed a critical bug by implementing a graceful shutdown process that ensures all shutdown handlers complete before the container exits, using shell scripting and DevOps best practices. The solution included automatic cleanup of temporary data directories, specifically removing ephemeral files from /tmp/browserless-data-dirs to prevent data leakage and orphaned resources during restarts or terminations. Validated the approach with end-to-end testing using docker stop and docker restart, ensuring clean exits and improved operational safety for containerized deployments.