Glenn updated the self-hosted deployment documentation in the netbirdio/docs repository, focusing on aligning setup instructions with current Docker CLI best practices. He replaced deprecated 'docker-compose' commands with the modern 'docker compose' syntax, ensuring that users can reliably start services and check logs during NetBird self-hosted deployments. Working primarily with Docker and Markdown, Glenn emphasized clarity and maintainability in the documentation, aiming to streamline onboarding and reduce support requests. The work demonstrated a thoughtful approach to technical writing, addressing evolving tooling standards and improving the overall user experience for self-hosted deployments without introducing new features or bug fixes.