June 2026 — Notebooks (red-hat-data-services/notebooks) What was delivered: - Key feature: Directory pruning for _copy_tree driven by .dockerignore patterns. Implemented parsing of .dockerignore to extract directory patterns (including both **/name/ and bare name/), and pruned matching directories during os.walk to prevent file system errors when handling deep directory trees such as content-addressed stores like .pnpm-store. Added comprehensive unit tests validating parsing, exclusion behavior, and copy semantics. Major bugs fixed: - Fixed OSError: [Errno 63] File name too long by preventing traversal into deeply nested directories during copy operations, improving reliability in CI and deployment pipelines. Accomplishments and impact: - Increased stability and reliability of notebook packaging/deployment; reduced runtime errors and troubleshooting time related to long-path limits. - Strengthened code quality around copy operations with dockerignore-aware logic, enabling safer builds for complex repos. Technologies/skills demonstrated: - Python filesystem operations (os.walk), parsing and applying .dockerignore patterns, glob/negation handling, and test-driven development (unit tests). - Pattern matching, edge-case handling in dockerignore semantics, and collaboration reflected in co-authored commit work. Commit reference: - 7ac18e5d5e4ea455e0c5fe56426605f41cb0e5ac