Worked on the City-of-Helsinki/kukkuu repository to enhance deployment documentation, focusing on improving the onboarding process for Docker-based environments. Updated the project’s README using Markdown to provide clear instructions for configuring authentication, specifically guiding developers to set the SOCIAL_AUTH_TUNNISTAMO_SECRET environment variable from Azure Key Vault. This documentation update streamlined the setup process for new contributors and reinforced secure secret management practices during deployment. The work emphasized clarity in the authentication flow and reduced potential setup errors. The contribution centered on documentation skills and secure deployment workflows, with a targeted approach to supporting developers working with Docker and environment variable management.