added flask docker scaffolding

src/webui/Dockerfile

@@ -0,0 +1,9 @@
+FROM python:3.9-slim
+RUN apt-get update && apt-get install -y \
+    gcc  \
+    && rm -rf /var/lib/apt/lists/*
+RUN pip install flask==5.6.0
+ADD ./run.sh /run.sh
+RUN chmod +x /run.sh
+EXPOSE 5000
+CMD /run.sh