CORS issue when requesting flutter website files from DevTools

[kenzieschmoll]

Issue when requesting survey json file:

Access to XMLHttpRequest at 'https://flutter.dev/f/dart-devtools-survey-metadata.json' from origin 'http://127.0.0.1:9109' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

Additionally, when developing the website and hosting through docker, we are seeing a CORS error when requesting the DevTools release notes files. So we get a CORS error when requesting the release notes markdown files through the localhost:4002 url, but we do not see the CORS error when requesting through the flutter.dev url.

[parlough]

I'm going to close this as the mentioned link is linking to flutter.dev instead of docs.flutter.dev, and our firebase.json is set up to add the appropriate headers.

The local case might not work still, but for these particular workflows I think relying on the automatic staged hosting is sufficient. If anyone feels like further work is needed here though, please let me know. Thanks!