During November 2024, Minsoo Kim developed cross-platform extended attribute (xattr) support for container images, focusing on FreeBSD integration within the containers/container-libs and containers/storage repositories. Kim implemented FreeBSD-specific xattr wrappers and system calls in Go, enabling consistent get, set, and list operations across Linux, macOS, and FreeBSD. The work included harmonizing error handling by refactoring unreachable error paths and aligning error codes, which improved reliability and reduced platform-specific maintenance. By addressing file system operations and error handling at the system programming level, Kim enabled smoother cross-platform deployments and enhanced the portability of container image layer unpacking workflows.