Removing username - password auth step works

[hyprstack]

This issue is about https://circleci.com/docs/2.0/google-container-engine/ (source file: https://github.com/circleci/circleci-docs/blob/master/jekyll/_cci2/google-container-engine.md)

When trying to upload a cloud function using this guide, although I had a service account json key with the appropriate permissions to upload a cloud function, the step where

    auth:
    #Put the contents of keyfile.json into an environment variable for the build called GCR_CREDS, which is then passed in.
      username: _json_key
      password: $GOOGLE_AUTH 

failed constantly in circle ci with the error message

Build-agent version 0.0.4545-ba6be34 (2017-11-20T20:01:46+0000)
Downloading previous test results
Starting container google/cloud-sdk:latest
  image is cached as google/cloud-sdk:latest, but refreshing...
Error response from daemon: Get https://registry-1.docker.io/v2/google/cloud-sdk/manifests/latest: unauthorized: incorrect username or password

I found that removing auth: ... completely from the config file solved my problem.

Also explaining whether the comment #Put the contents of keyfile.json into an environment variable for the build called GCR_CREDS, which is then passed in. is relevant would be good too.

Perhaps an explanation to what _json_key as username does would be helpful too as I also spent a lot of time replacing it, to no avail, in the hopes of getting the docs to work.

[smart-alek]

@hyprstack! Hello!!

I believe that a recent PR has addressed the issues you've raised here: go check out #2142, or just read the updated document itself. If you find any outstanding issues, I'll be happy to re-open this!

[hyprstack]

@smart-alek looks good! Thanks :)