Liel worked across three repositories to deliver containerized deployment and monitoring solutions that improve reliability and repeatability. For Hackaton-Yad-Tamar/Front, Liel created a Dockerfile using Node.js 18 to standardize development and production environments. In Hackaton-Yad-Tamar/Back, Liel established a Docker-based deployment pipeline with Python 3.12 and uvicorn, refining the Dockerfile for clarity and maintainability. For Hackathon-Night-Shine/app, Liel implemented a Docker Compose-based monitoring stack with Prometheus, Grafana, and PostgreSQL exporter, while simplifying the setup by removing unnecessary files. Using Docker, Shell, and YAML, Liel’s work laid a solid foundation for scalable infrastructure and improved operational observability.