fix: Add build essentials and cmake to Dockerfile for llama-cpp-python

Dockerfile

@@ -1,12 +1,20 @@
-# Start with the official Python 3.11 image
-FROM python:3.11-slim
+# Start with the official Python 3.11 image (the full version, not slim)
+FROM python:3.11
 
 # Set the working directory inside the container
 WORKDIR /app
 
+# Install system dependencies needed to build wheels for libraries like llama-cpp-python
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
+    cmake \
+    && rm -rf /var/lib/apt/lists/*
+
 # Copy the requirements file first and install dependencies
-# This is a best practice for Docker caching
 COPY requirements.txt requirements.txt
+
+# Tell llama-cpp-python to build itself during installation
+ENV CMAKE_ARGS="-DLLAMA_CUBLAS=OFF -DLLAMA_HIPBLAS=OFF -DLLAMA_METAL=OFF"
 RUN pip install --no-cache-dir --upgrade -r requirements.txt
 
 # Copy the rest of your application code
@@ -16,5 +24,4 @@ COPY . .
 EXPOSE 7860
 
 # Command to run the application using uvicorn
-# We need to specify the host and port for Hugging Face Spaces
 CMD ["uvicorn", "api.main:app", "--host", "0.0.0.0", "--port", "7860"]