Create dockerfile

dockerfile

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+# Dockerfile
+FROM python:3.9-slim
+
+# System dependencies
+RUN apt-get update && apt-get install -y \
+    graphviz \
+    libgl1-mesa-glx \
+    libglib2.0-0 \
+    && rm -rf /var/lib/apt/lists/*
+
+# Set working directory
+WORKDIR /app
+
+# Copy requirements first to leverage Docker cache
+COPY requirements.txt .
+
+# Install Python dependencies
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application files
+COPY . .
+
+# Expose Streamlit port
+EXPOSE 8501
+
+# Healthcheck for HF Spaces
+HEALTHCHECK CMD curl --fail http://localhost:8501/_stcore/health
+
+# Run the app
+ENTRYPOINT ["streamlit", "run", "app.py", "--server.port=8501", "--server.address=0.0.0.0"]