Save tilt data to a local file
See: https://cloud.docker.com/u/andylytical/repository/docker/andylytical/tiltscanner
Assume RPi OS is up to date with git and docker installed (as per https://github.com/andylytical/brewpi-scripts/ through the Docker Setup step.)
cd /home/pi
git clone git@github.com:andylytical/pytilt.git
cd pytilt
./lrun.sh