feat: langchain improved

demos/use_cases/multi_frameworks/Dockerfile

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+FROM python:3.11-slim
+
+WORKDIR /app
+
+# Install bash and uv
+RUN apt-get update && apt-get install -y bash && rm -rf /var/lib/apt/lists/*
+RUN pip install --no-cache-dir uv
+
+# Copy dependency files
+COPY pyproject.toml ./
+COPY README.md ./
+
+# Install dependencies to system Python
+RUN uv pip install --system .
+
+# Copy shared utilities
+COPY openai_protocol.py ./
+
+# Copy application code
+COPY crewai/ ./crewai/
+COPY langchain/ ./langchain/
+
+# Set environment variables
+ENV PYTHONUNBUFFERED=1
+ENV PYTHONPATH=/app:$PYTHONPATH
+
+# Default command (will be overridden in docker-compose)
+CMD ["uv", "run", "python", "crewai/flight_agent.py"]