[Dockerfile] Added pip install netron

Dockerfile

@@ -9,6 +9,7 @@ RUN pip install -r requirements.txt
 RUN rm requirements.txt
 RUN apt update; apt install nano
 RUN pip install jupyter
+RUN pip install netron
 
 # Note that we expect the cloned finn directory on the host to be
 # mounted on /workspace/finn -- see run-docker.sh for an example