Worked on improving deployment reliability for the zotonic/zotonic repository by addressing configuration hygiene within the Docker Compose setup. Focused on updating the docker-compose.yml file, the developer removed the deprecated 'version' key to ensure compatibility with current Docker Compose standards. This change reduced the risk of deployment warnings or errors, supporting smoother orchestration across different environments. The work involved applying DevOps best practices and leveraging Docker and YAML to maintain clean, maintainable configuration files. Although the contribution centered on a single bug fix, it demonstrated attention to evolving platform requirements and a methodical approach to maintaining robust deployment pipelines.