Worked on enhancing development container reliability and developer experience for the EsupPortail/Esup-Pod repository by upgrading the base operating system from Debian 11 to Debian 12, aligning with updated security and compatibility requirements. Introduced automatic reloading of Celery task workers using watchdog, which streamlined the development workflow by reducing manual restarts during code changes. Integrated Docker health checks to provide real-time monitoring of container status, improving overall stability in development environments. Optimized Docker image build times and resource usage by minimizing COPY calls in Dockerfiles. The work leveraged skills in Docker, containerization, and Python, focusing on maintainability and efficiency.