Gabriel Negre focused on stabilizing service accessibility in the pucrs-constrsw-2025-2/base repository by addressing a Docker Compose port configuration issue. He resolved a bug in the docker-compose.yml file, ensuring that environment variables were referenced correctly to expose both internal and external API ports. This fix, implemented using Docker and YAML, allowed API endpoints to be reliably accessed in standard deployment scenarios. Gabriel validated the solution by confirming service reachability post-deployment and contained the change within a single commit, minimizing risk and simplifying rollback. Over the month, his work emphasized careful configuration management and targeted problem-solving rather than feature development.