Serverless offline, disable when deploying

I expect the answer is very similar to per stage environment variables in which case it will be something like:

custom:
  stage: "${opt:stage, self:provider.stage}"
  plugins:
    dev:
      - serverless-offline
    prod:

plugins: ${self.custom.${self.custom.stage}.plugins}

Note: This hasn’t been tested so it may require a little debugging