Alexander Chemeris enhanced the daytonaio/daytona repository by adding network diagnostic capabilities to the sandbox environment. He updated the sandbox Docker image to include essential utilities such as iputils-ping and bind9-dnsutils, enabling in-sandbox network troubleshooting and validation. Leveraging his skills in containerization and DevOps, Alexander focused on improving test reliability and accelerating debugging for network-related scenarios. The technical approach centered on Dockerfile modifications to ensure maintainability and image hygiene. While the work was limited to a single feature over one month, it addressed a clear need for native networking tools, laying groundwork for more robust CI network validation.