Reference app for root path feature implementation. This shows how a reverse proxy should perform host and path rewriting.
If your main domain is served by a different platform or system and you want to scope a VTEX IO store in a fixed path prefix, you can use the Root Path feature.
For example, given a domain mybrand.com, if you want to serve your store under mybrand.com/ar, you must:
1 - Create a public domain for your account and add it to License Manager, e.g. mybrand.com.ar.
2 - For all requests to mybrand.com/ar, configure your reverse proxy to:
2.1 - Rewrite the Host header to mybrand.com.ar.
2.2 - Rewrite the request path removing the prefix. E.g. /ar/my-product/p becomes /my-product/p.
2.3 - Add a x-vtex-root-path header to the request with the value of the removed prefix, e.g. /ar.
This will inform Render that all generated links in this site should be prefixed by the root path, in this case /ar.
This is an example app that performs the rewrites and adds the header for test purposes.