message: docs: clarification on concatenating environment variables
diff: @@ -668,6 +668,25 @@ myNextApp:
  DATABASE_URL: ${myDatabase.databaseUrl}
  ```
  +#### Concatenating environment variables doesn't seem to work
  +
  +If you try to concatenate an environment variable with another string, like `${env.VARIABLE}-blah`, Serverless framework seems to resolve it to only `${env.VARIABLE}`.
  +
  +It seems to be a bug in Serverless Components - it may be due to not using the latest GA version, where it might have been fixed (this is still on Components Beta, unfortunately). For now, the workaround is:
  +
  +1. Don't concatenate but specify only environment variable, though this means duplicating environment variables.
  +2. Follow https://github.com/serverless-nextjs/serverless-next.js/issues/530#issuecomment-680122810 and set a `serverless.yml` variable first, then concatenate:
  +
  +```yml
  +stage: ${env.STAGE}
  +my-app:
  + component: '@sls-next/serverless-component@1.18.0'
  + inputs:
  + domain:
  + - '${stage}-front-end'
  + - mydomain.com
  +```
  +
  #### I was expecting for automatic subdomain redirection when using the domainType: www/apex input
  You can use the new `domainRedirects` input, along with forwarding `Host` header and `domainType: both`, to redirect requests to the correct domain. See example configuration below that redirects `www.example.com` requests to `https://example.com`.
  