First, install the deploy tool (this will be installable from the python package repository soon)
pip3 install --user orderly-web
Ensure that the path that the script is copied into is in your path (on Linux, most likely ~/.local/bin, on OSX ~/Library/Python/<version>/bin
orderly-web start config
It is possible that the orderly-web deploy scripts should be updated
pip3 install --user --upgrade orderly-web
Then redeploy with:
orderly-web stop config
orderly-web start --pull config