JS error in docker-compose demo

[dshuffma-ibm]

Running the docker-compose setup I get this JS error when submitting my text:

The dummy websever seems to run fine, no 404s:

• docker compose command: docker-compose up echo-server envoy commonjs-client
• using Firefox v61.0.2
• using grpc-web v0.3.0 (caee772)

[stanley-cheung]

Hm, I cannot quite reproduce this. It runs fine in my Firefox. The docker image seems to be brought up, but there seems to be some sort of problem when compiling the JS with webpack?

What happened if you try to run docker-compose up echo-server envoy closure-client?

You will then need to hit localhost/net/grpc/gateway/examples/echo/echotest.html.

[dshuffma-ibm]

@stanley-cheung ha... try clicking the blue "send" button instead of hitting the enter key!

[stanley-cheung]

Got it. Nice find! :) #257