add cli app and fix relationship typos

python/cli/Dockerfile

@@ -0,0 +1,10 @@
+FROM python:3.9-alpine
+LABEL MAINTAINER="Thomas Peetz <thomas.peetz@thpeetz.de>"
+ENV PS1="\[\e[0;33m\]|> kontor <| \[\e[1;35m\]\W\[\e[0m\] \[\e[0m\]# "
+
+WORKDIR /src
+COPY . /src
+RUN pip install --no-cache-dir -r requirements.txt \
+    && python setup.py install
+WORKDIR /
+ENTRYPOINT ["kontor"]