Add Dockerfile for Hugging Face Spaces deployment

.gitignore

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+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+env/
+venv/
+ENV/
+.venv
+pip-log.txt
+pip-delete-this-directory.txt
+.pytest_cache/
+.coverage
+htmlcov/
+dist/
+build/
+*.egg-info/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS
+.DS_Store
+Thumbs.db

Dockerfile

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+# Read the doc: https://huggingface.co/docs/hub/spaces-sdks-docker
+# Dockerfile for QThink Agentic POC API
+
+FROM python:3.9
+
+RUN useradd -m -u 1000 user
+USER user
+ENV PATH="/home/user/.local/bin:$PATH"
+
+WORKDIR /app
+
+COPY --chown=user ./requirements.txt requirements.txt
+RUN pip install --no-cache-dir --upgrade -r requirements.txt
+
+COPY --chown=user . /app
+
+# Hugging Face Spaces requires port 7860
+CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]