Update Dockerfile

Dockerfile

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+FROM python:3.9-slim
+
+# Set working directory
+WORKDIR /app
+
+# Copy requirements first for better caching
+COPY requirements.txt .
+
+# Install dependencies
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy the rest of the app
+COPY . .
+
+# Expose the port Hugging Face expects
+EXPOSE 7860
+
+# Run the app with Gunicorn for production (binds to 0.0.0.0:7860)
+CMD ["gunicorn", "--bind", "0.0.0.0:7860", "--workers", "1", "--timeout", "0", "app:app"]