OpenID Connect SSO with Kopano Meet and (for example) Nextcloud

While native support for OAuth has recently been removed from Cloudron users can still utilise OAuth 2 and OpenID Connect (oidc) to authorize users thanks to the built in OpenID Provider of the Kopano Meet app. Under the hood Kopano Meet uses OpenID Connect to sign users into the application and this functionality is provided through Kopano Konnect, which is bundled inside of the app and pre-configured to allow Cloudron users to login. This article will show how to extend the configuration of Kopano Konnect to allow other apps to make use of OpenID Connect.