...
Then perform composer.json and ScriptHandler files as described above. Update theme compilation command as described above. Make sure your composer.json requires: "pantheon-systems/drupal-integrations": "^8.0"
Setup project in CircleCI
You will need to add three environment variables in the project. In CircleCI interface click on project settings → Environment Variables. Add the following variables:
TERMINUS_SITE - Name of the site on pantheon (project name).
TERMINUS_SITE_NAME - same as the above
TERMINUS_TOKEN - machine token - generate deployment machine token through the dashboard on Pantheon.