add buck fetch (#27)

Signed-off-by: gengjiawen <[email protected]>

Author: gengjiawen

.circleci/config.yml

@@ -14,7 +14,8 @@ jobs:
           command: |
             git clone https://github.com/facebook/react-native --depth=1
             cd react-native
-            docker run --rm --name rn-build -v $PWD:/pwd -w /pwd react-native-community/react-native /bin/sh -c "yarn install && ./gradlew RNTester:android:app:assembleRelease"
+            docker run --rm --name rn-build -v $PWD:/pwd -w /pwd react-native-community/react-native /bin/sh -c \
+              "yarn install && ./gradlew RNTester:android:app:assembleRelease && ./scripts/circleci/buck_fetch.sh"
       - run:
           name: docker info
           command: |