L. White improved self-hosted deployment reliability for the AppFlowy-Cloud repository by addressing a persistent asset loading issue. They identified that image URLs were incorrectly resolving to a beta domain after self-hosted imports, which disrupted asset delivery for users. To resolve this, L. White updated the Nginx configuration to inject an X-Host header, ensuring proper host resolution and correct asset loading in self-hosted environments. Their work involved debugging cross-host asset loading and validating end-to-end asset rendering post-fix. This configuration management and DevOps effort reduced user-reported errors, streamlined onboarding, and enhanced the overall reliability of self-hosted deployment workflows.