We want to implement a further customization on jive theme, like what Jive Community does. When trying to include our own override.css file into the template, we did not find a proper way to inject. As an example, JiveWorks has added their override css in the head section.
Currently, we use 'template/css-custom.soy' to write on-page css. However, to maintain and test easily, we want to upload and include independent css file. Please let us know the proper solution to include css src.