ControllerMultipleParams.fs

let imageController id = controller {
    show (fun ctx imageId -> (sprintf "Edit handler - id: %s; imageId %s" id imageId ) |> Controller.text ctx)
}

let topRouter = router {
    forwardf "/%s/images" imageController
}

let app = application {
    pipe_through endpointPipe
    use_router topRouter
    url "http://0.0.0.0:8085/"
    memory_cache
    use_gzip
}