* (bugfix): Added celerybeat extras to gitignore
* (bugfix): fixed missing regex denoter
* Fix .dockerignore node_modules pattern and add comprehensive exclusions
- Fix#1398: Change 'node_modules' to '**/node_modules' to exclude all nested directories
- Add patterns for Python bytecode, IDE files, logs, and build artifacts
- Consolidate node_modules patterns in .gitignore to use **/node_modules/