Add PyTorch, transformers, and pypdf to Docker build

Dockerfile

@@ -9,7 +9,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /app
-RUN pip install --no-cache-dir pybind11
+RUN pip install --no-cache-dir gradio numpy pypdf transformers torch --extra-index-url https://download.pytorch.org/whl/cpu
 
 # Copy only what your engine needs
 COPY CMakeLists.txt ./