fix: rename Backend.Dockerfile to Dockerfile for Hugging Face

Dockerfile

@@ -0,0 +1,36 @@
+# Use Python 3.12-slim as the base image
+FROM python:3.12-slim
+
+# Set working directory
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
+    libmagic1 \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy requirements.txt
+COPY requirements.txt .
+
+# Install Python dependencies
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy the rest of the application code
+COPY . .
+
+# Expose the port the app runs on (Hugging Face Spaces uses 7860 by default)
+EXPOSE 7860
+
+# Script to build vector DBs and start the server
+RUN echo '#!/bin/bash\n\
+    echo "Building Vector Databases..."\n\
+    python -m module_a.process_documents\n\
+    python -m module_a.build_vector_db\n\
+    python -m module_c.indexer\n\
+    echo "Starting FastAPI server on port ${PORT:-7860}..."\n\
+    uvicorn api.main:app --host 0.0.0.0 --port ${PORT:-7860}\n\
+    ' > /app/start.sh && chmod +x /app/start.sh
+
+# Run the startup script
+CMD ["/app/start.sh"]