Bertoldo focused on enhancing the coolify-docs repository by developing comprehensive documentation for configuring environment variables in preview deployments. He authored step-by-step Markdown guides that clarify how users can manage environment-specific settings through the application’s environment variable interface. This work aimed to streamline onboarding and reduce support requests by aligning documentation closely with the actual application configuration process. Bertoldo’s contribution centered on documentation as a technical skill, leveraging Markdown to ensure clarity and accessibility. The scope of work was targeted, addressing a single feature with depth rather than breadth, and provided tangible business value by improving user understanding and operational efficiency.