Update Android Dockerfile to include root BUCK file (#31950)
Update Android Dockerfile to include root BUCK file (#31950)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/31950

Changelog: [Internal]

Adds the root BUCK file to the Docker image we use to test RNTester on CircleCI. See https://github.com/facebook/react-native/commit/df9cd05621f58fe5c67f889b741bfff20c780b0e

Reviewed By: ShikaSD

Differential Revision: D30099261

fbshipit-source-id: 936c505a0f4e7b791743901a06fa3b14c40b183e

pandiaraj44/react-native,janicduplessis/react-native,javache/react-native,javache/react-native,facebook/react-native,pandiaraj44/react-native,janicduplessis/react-native,javache/react-native,javache/react-native,facebook/react-native,javache/react-native,janicduplessis/react-native,javache/react-native,facebook/react-native,facebook/react-native,pandiaraj44/react-native,facebook/react-native,janicduplessis/react-native,facebook/react-native,facebook/react-native,javache/react-native,pandiaraj44/react-native,javache/react-native,pandiaraj44/react-native,pandiaraj44/react-native,janicduplessis/react-native,janicduplessis/react-native,facebook/react-native,pandiaraj44/react-native,janicduplessis/react-native,facebook/react-native,javache/react-native,janicduplessis/react-native,pandiaraj44/react-native