During a one-month contribution to the alexta69/metube repository, Phus Lu focused on optimizing the Docker container startup process. He refactored the docker-entrypoint.sh script, replacing the default shell invocation with an 'exec python3' command. This change ensured that the Python application replaced the shell as the main process, reducing the number of running processes within the container and improving startup performance. The work demonstrated practical use of bash scripting, containerization, and Python programming. While the scope was limited to a single feature and did not include bug fixes, the update addressed process management efficiency within the deployment workflow.