message: auth-backend: added note about oauth2-proxy example setup
diff: @@ -30,6 +30,11 @@ import { prepareBackstageIdentityResponse } from '../prepareBackstageIdentityRes
  import { createAuthProviderIntegration } from '../createAuthProviderIntegration';
  import { IncomingHttpHeaders } from 'http';
  +// NOTE: This may come in handy if you're doing work on this provider:
  +//
  +// plugins/auth-backend/examples/docker-compose.oauth2-proxy.yaml
  +//
  +
  export const OAUTH2_PROXY_JWT_HEADER = 'X-OAUTH2-PROXY-ID-TOKEN';
  /**
  