Envoy setup for grpc-web

[Parker Spielman]

Hi, I'm a bit confused as to how to set up Envoy with gRPC web.

According to the documentation, "we will use the Envoy proxy to forward the gRPC browser request to the backend server. You can see the complete config file in envoy.yaml". 

I have a JS FE in the browser that is talking to a go backend. I'm confused about what the expectation is to deploy Envoy for the browser. Does this mean that envoy and this yaml file are running on the backend with a frontend envoy proxy and sidecar (doesn't quite match grpc documentation), or something else?

Thanks in advance!