Add Dockerfile

Dockerfile

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+FROM python:3.10-slim
+
+WORKDIR /app
+
+# Install dependencies
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application
+COPY app/ ./app/
+
+# Non-root user
+RUN useradd -m -u 1000 appuser && chown -R appuser:appuser /app
+USER appuser
+
+EXPOSE 8088
+
+CMD ["python", "-m", "app.main"]