Packaged project does not serve static index.html

[udalrich]

I have a project which is similar to the react sample. When I run in activator, it works. I have index.html in ui/app. When I ran activator universal:packageBin to create a distribution, the resulting distribution did not serve index.html.

When I added

unmanagedResourceDirectories in Assets <+= (gulpDirectory in Compile)(base => base / "app" )

to build.sbt, it would serve index.html, but as an attachment, so the browser asked me where I wanted to save the file, rather than displaying it.

This appears to be related to the switch from dev mode to prod mode.

When I moved index.html to app/views/index.scala.html, added

GET     /ui/index.html          controllers.HomeController.index()

to routes and implemented the method to return ok(views.html.index.render()), it I could load index.html when I accessed server:9000/, but it could not then load the javascript from the ui directory.

Are there simple directions for making the plugin work in production mode?