Allow setting path to entry point

[matze]

Right now, the doc link only works if an index.html is present in the root of the uploaded zip file otherwise there will be a 404. However, there a few documentation generation systems that do not have an index.html in the root, for example cargo doc generates one per each crate including the dependency. It would be nice to specify the path to an entry point while uploading, for example in an HTTP header.

[fliiiix]

Thanks for reaching out and using docat 🎉

I took a look at the config and it seems there is a small bug.
#582

And there you have the option to override it to use a different index file.
But index.html is the de-facto standard for that usecase and we try to keep the options and configuration as limited as possible. For that reason i don't think we will ever add a option to configure a different entry point per project version.

You can use direct links even if you don't have a index.html like this

http://localhost:8000/#///foo.html

And for cargo specifically there are a few issues you can track where they want to add support for something like this
rust-lang/cargo#739

and in the meantime i would create a small shell script adding a index.html to your zip before uploading.