Adjust pipeline setup

Should probably do some caching of node_modules so we don't have to do npm i for both the linting and test parts.

frontend/public/env.js

-window.ENV = {
-  NODE_ENV: 'development',
-  PUBLIC_URL: '',
-  FAST_REFRESH: true,
-  REACT_APP_VERSION: '0.1.0',
-  REACT_APP_NAME: 'greg',
-}
+window.ENV = {"NODE_ENV":"development","PUBLIC_URL":"","FAST_REFRESH":true,"REACT_APP_VERSION":"0.1.0","REACT_APP_NAME":"greg"}
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