Pantheon-WordPress-Nested-Docroot-Setup-Script - just change out the DEMOSITENAME-CHANGE-ME variable and set the install credentials.

Pantheon-WordPress-Nested-Docroot-Setup-Script.sh

#!/bin/bash

# name the site
# DEMOSITENAME-CHANGE-ME

# make a site on Pantheon
terminus site:create -- DEMOSITENAME-CHANGE-ME DEMOSITENAME-CHANGE-ME WordPress

# install WP
terminus wp DEMOSITENAME-CHANGE-ME.dev -- core install --url=dev.DEMOSITENAME-CHANGE-ME.pantheonsite.io --title=TITLE --admin_user=USER --admin_password=Password(not password though) --admin_email=EMAIL

# let's add WP-CFM and set theme to the best theme ever 2016!
terminus wp DEMOSITENAME-CHANGE-ME.dev -- plugin install wp-cfm --activate
terminus wp DEMOSITENAME-CHANGE-ME.dev -- theme activate twentysixteen 

#  Now, let's go ahead and set Pantheon to Git connection mode
terminus connection:set DEMOSITENAME-CHANGE-ME.dev git

# and let's store the git URL in a variable for later
GITURL=$(terminus connection:info DEMOSITENAME-CHANGE-ME.dev --field=git_url)

# let's clone down the repo where I like to put it
cd $HOME/Documents
git clone ${GITURL} DEMOSITENAME-CHANGE-ME
cd DEMOSITENAME-CHANGE-ME

# Let's edit the pantheon.yml to let is have a web docroot
echo "web_docroot: true" >> pantheon.yml

# and the other instructions from https://pantheon.io/docs/nested-docroot/
mkdir web
git mv -k $(find . -type f -maxdepth 1  | grep -v pantheon.yml) wp-includes wp-content wp-admin ./*.php web

# having done all that, let's add, commit and pus the dang thing

git add .

git commit -m 'converted to use docroot'

git push origin master

# and just for kicks, let's open the site in Firefox, but let's give the whole thing 15 seconds to sync
sleep 15s

open -a /Applications/Firefox.app https://dev-DEMOSITENAME-CHANGE-ME.pantheonsite.io/