Upgrade pip before installing py pkgs

Dockerfile

@@ -152,7 +152,9 @@ RUN \
     && DEBIAN_FRONTEND=noninteractive apt-get install -y ccache 
 
 # install python packages
+RUN pip install --upgrade pip
 RUN pip install pybars3 paramiko mkdocs
+RUN pip3 install --upgrade pip
 RUN pip3 install paramiko cryptography
 
 # fix locale so we can run tmux