Add week 6 materials

materials/06-failures/seminar/envoy-outlier-detection/kittens/Dockerfile

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+FROM python:3.11.5-slim-bullseye
+
+WORKDIR /application
+
+# Copy the requirements file and download the dependencies.
+COPY requirements.txt requirements.txt
+RUN pip3 install -r requirements.txt
+
+# Copy other data.
+COPY . .
+
+CMD [ "python3", "app.py"]