Now this is not the end. It is not even the beginning of the end. But it is, perhaps, the end of the beginning.
Just a quick cheatsheet-ish post as I figure out how to move my home server off nginx and onto caddy-docker-proxy, which I hope will make configuration easier in the long run. Figuring out what labels to attach to get Caddy to do what I want is a minor stumbling block.
In this case, it’s working with the Collabora server that my Nextcloud instance uses to enable online editing of office-type files. The sticking point is that the server complains if Nextcloud connects over plain HTTP, but Caddy (though which Nextcloud will connect) complained about the Collabora server’s self-signed SSL certificate.