Jake Zu focused on enhancing deployment documentation for the City-of-Helsinki/kukkuu repository, specifically targeting Docker-based workflows. He updated the project’s README using Markdown to clarify how developers should configure authentication by sourcing the SOCIAL_AUTH_TUNNISTAMO_SECRET environment variable from Azure Key Vault. This documentation improvement streamlined the onboarding process for new contributors and reinforced best practices for secret management during deployments. By emphasizing secure handling of environment variables and providing clear, actionable instructions, Jake’s work addressed a common pain point in Docker authentication setup. The contribution demonstrated a solid understanding of documentation as a technical skill, though the scope remained narrowly focused.