env_to_preserve.conf

env S3_ACCESS_KEY_ID;
env WIKI_DATABASE_PASSWORD;
env S3_SECRET_ACCESS_KEY;
env RECAPTCHA_PUBLIC_KEY;
env WIKI_EMAIL_PASSWORD;
env WEBSOLR_URL;
env S3_BUCKET;
env WIKI_DATABASE_HOST;
env WIKI_DATABASE_USER;
env RECAPTCHA_PRIVATE_KEY;