GID 1000 is already in use by the node:20-alpine base image. Changed non-root user to use UID/GID 101 which is commonly available. This fixes the Docker build error: 'addgroup: gid 1000 in use' 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>