push updated backend changes and auto start buiding

Dockerfile

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+FROM python:3.10-slim
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y git && rm -rf /var/lib/apt/lists/*
+
+# Set working directory
+WORKDIR /app
+
+# Copy project files
+COPY . /app
+
+# Install Python dependencies
+RUN pip install --no-cache-dir --upgrade pip \
+    && pip install --no-cache-dir -r requirements.txt
+
+# Expose the port Hugging Face Spaces expects
+EXPOSE 7860
+
+# Run FastAPI with Uvicorn
+CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]