Update Dockerfile

Dockerfile

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+FROM python:3.10-slim
+
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    build-essential \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy requirements first
+COPY requirements.txt .
+
+# Install Python dependencies
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy all files
+COPY . .
+
+# Expose port 7860
+EXPOSE 7860
+
+# Run app with gunicorn
+CMD ["gunicorn", "app:app", "--bind", "0.0.0.0:7860"]