Refactor Dockerfile to improve dependency caching, set environment variables, and enhance directory permissions

Update Dockerfile to enhance security and caching for HuggingFace dependencies

rebild project

change python 3.11 slim and others

Refactor Dockerfile to improve cache directory structure and permissions; update app.py to use a more accurate model identifier and enhance logging for model initialization.

Update Dockerfile to create cache directory and set environment variables for transformers

Enhance Dockerfile to create vector store and chat history directories with appropriate permissions, and run the application as a non-root user

Add Dockerfile for containerization and update README for SDK casing