During April 2025, work focused on optimizing the Docker image build process for the Dataflux-U-nidos/Backend repository. The developer implemented a multi-stage Dockerfile using Docker and TypeScript, separating build dependencies from runtime and ensuring only essential artifacts were included in the final image. This approach reduced image size, improved deployment speed, and enhanced security. Additionally, a minor fix was made to a DTO type alias, aligning backend data contracts and supporting API stability. All improvements were consolidated into a single, focused commit, reflecting a methodical approach to backend development and deployment optimization within a short, targeted timeframe.