React call all output .html file into a single parent .html file

Question

Do you have any idea how to call each .html with bundle.js to a single parent .html with layout?

/Documentation
-- /node_modules
-- index.html
-- bundle.js
-- webpack.config.js
/Marketing
-- /node_modules
-- index.html
-- bundle.js
-- webpack.config.js
-parent.html

The main key to achieve here is to isolate the development of each modules (Documentation, Marketing) so that a team can see their work preview.

Stack: React, React-Router, Redux

PS: I use a build tool to run each webpack config for compilation.