Github pages -project for hosting Sanakirja.fi ‘under maintenance’ and error -pages when Heroku is down / app is not available.
All html-pages are publicly available, for example https://kielikone.github.io/maintenance.html. More about Gihub pages han be found here.
Some guidelines for development here. Redirection is made possible by adding
MAINTENANCE_PAGE_URL=<url>
to environment variables of the client in Heroku.