Added Dockerfile and related manual

Dockerfile

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+FROM python:3.12-slim
+
+RUN apt-get update && apt-get install --no-install-recommends -y libolm3 libolm-dev git && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /usr/src/app
+
+COPY requirements.txt ./
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY . .
+
+WORKDIR /runtime
+RUN chown -R 1000:1000 /usr/src /runtime
+
+USER 1000:1000
+CMD [ "python", "/usr/src/app/main.py" ]