Jess Zhang refactored the Dockerfile for the microsoft/dusseldorf repository, focusing on integrating the Zentralbibliothek library through a multi-stage build process to support DNS and HTTP listeners. By removing redundant Dockerfiles and streamlining Python script execution, Jess improved deployment reliability and simplified ongoing maintenance. The work included clarifying documentation for multi-package installation within Dockerfiles, which aids onboarding and reduces future confusion. Using Docker, Python, and Shell scripting, Jess demonstrated a strong grasp of containerization and build systems. The depth of the changes addressed both code hygiene and feature integration, resulting in a more maintainable and efficient deployment pipeline.