From Phantom Conflicts to Docker Permissions: A Deep Dive into Debugging an Infinite Loop in a Git Hook for an AI Assistant

This article documents a complete technical troubleshooting process. A Git auto-commit hook script for the Claude Code AI coding assistant unexpectedly fell into an infinite loop, reporting non-existent 'Git conflicts'. Through layered debugging, we uncovered that the root cause was not a Git conflict, but a specific file ownership issue ('dubious ownership') within the Docker container environment. The article details the entire journey from diagnosis and code optimization to pinpointing and resolving the Git security configuration in Docker, offering valuable hands-on experience for similar automation script issues.