All credentials are stored in /config/config.json on your Docker volume.
/config/config.json
Create OAuth2 credentials in Google Cloud Console (type: Web application). Enable the Photos Library API in your project. Add https://photoaudit.kinohome.ca/auth/google/callback as an authorized redirect URI.
https://photoaudit.kinohome.ca/auth/google/callback
The Webapp Base URL is used to construct the Google OAuth redirect URI. Set it to the URL at which you access this app.
Google redirect URI will be: https://photoaudit.kinohome.ca/auth/google/callback