React Native, git submodules and CI/CD

config.yml

wversion: 2.1

node_image: &node_image
  docker:
    - image: node:12

android_image: &android_image
  docker:
    - image: reactnativecommunity/react-native-android

aliases:
  - &restore-yarn-cache
    name: Restore cached root node_modules
    keys: 
      - yarn-main-cache-{{ checksum "yarn.lock" }}
      - yarn-main-cache- # partial cache restore (get as much as possible dependencies from the most recent cache rather than start from zero)
  - &restore-submodule-yarn-cache
    name: Restore cached submodule node_modules
    keys: 
      - yarn-main-cache-{{ checksum "yarn.lock" }}
      - yarn-main-cache- # partial cache restore (get as much as possible dependencies from the most recent cache rather than start from zero)
   - &save-yarn-cache
    name: Save node_modules to cache
    key: yarn-main-cache-{{ checksum "yarn.lock" }}
    paths:
      - node_modules
    - &save-submodule-yarn-cache
    name: Save Submodules to cache
    key: submodule-cache-{{ epoch }} # cache submodule for next android varient builds Jobs
    paths:
      - "./submodule/submodule_name"        
      
      
      
restore_yarn_cache: &restore_yarn_cache
  restore_cache: *restore-yarn-cache

save_yarn_cache: &save_yarn_cache
  save_cache: *save-yarn-cache
  
restore_submodule_yarn_cache: &restore_submodule_yarn_cache
  restore_cache: *restore-submodule-yarn-cache

save_submodule_yarn_cache: &save_submodule_yarn_cache
  save_cache: *save-submodule-yarn-cache

jobs:
  node_build:
    <<: *node_image
    steps:
      - checkout
      - *restore_yarn_cache
      - run: yarn prepare_submodule
      - *restore_submodule_yarn_cache
      - run: yarn --cwd ./submoduule/submodaule_name
      - *save_submodule_yarn_cache
      - run: yarn install --network-concurrency 1
      - *save_yarn_cache
 android_build_staging:
    <<: *android_image
    steps:
      - checkout
      - run: yarn config set script-shell /bin/bash
      - run: yarn ci:create-release-key
      - *restore_yarn_cache
      - *restore_submodule_yarn_cache
      - run: yarn build:apk "staging"
      - store_artifacts:
          path: staging_build/
          destination: staging_build/apk-file


workflows:
  build:  
    jobs:
      - node_build:
          filters:
                branches:
                  only: 
                    - /^staging\/v/gm
      - android_build_staging:
          requires:
          - node_build
          filters:
            branches:
              only: /^staging\/v/gm