Junior Nascimento contributed to the zanfranceschi/rinha-de-backend-2025 repository by enhancing backend deployment reliability and repository hygiene. He updated the docker-compose.yml configuration to ensure the api1 service consistently pulls the latest OCaml backend image, reducing environment drift and supporting smoother onboarding. Using Docker and YAML, Junior also removed obsolete log and temporary artifact files, streamlining the codebase and minimizing confusion during debugging. His focused commits emphasized maintainability and stability, with no critical bugs reported during the period. The work demonstrated a practical approach to container image management and repository cleanup, resulting in cleaner deployment pipelines and more consistent environments.