Marco Smartinelli developed a Dockerfile formatting enhancement for the helix-editor/helix repository, focusing on improving code consistency and developer productivity. He integrated the dockerfmt formatter into the editor, establishing standardized Dockerfile formatting to streamline code reviews and reduce formatting drift. His work involved configuration management and editor development, leveraging TOML for configuration and collaborating through Git-based workflows. By automating Dockerfile formatting, Marco addressed the need for reliable and maintainable Dockerfile edits within the project. The feature was delivered as a traceable commit, reflecting a targeted engineering effort that improved the overall developer experience without introducing bug fixes during the period.