Derek Mackley developed a multi-architecture Docker image for Posterizarr in the home-operations/containers repository, focusing on standardized and portable container builds. He used Dockerfile, YAML, and Shell scripting to create a solution based on Python 3.13 Alpine, integrating ImageMagick and PowerShell dependencies along with the FanartTvAPI PowerShell module. Derek implemented a robust entrypoint script to reliably initialize and run the application across different environments. His work enabled cross-platform builds, streamlined deployments, and improved maintainability. The project demonstrated depth in containerization and DevOps practices, addressing the need for consistent, efficient deployment pipelines without introducing major bugs during the development period.