Create Dockerfile

Dockerfile

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+# Base image: CPU-only Python 3.12
+FROM python:3.12-slim
+
+# Set working directory
+WORKDIR /app
+
+# Copy project files
+COPY requirements.txt .
+COPY app.py .
+
+# Install dependencies
+RUN pip install --upgrade pip
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Expose port
+EXPOSE 8000
+
+# Start Flask app
+CMD ["gunicorn", "--bind", "0.0.0.0:8000", "app:app"]