My CircleCI setup for React Native apps

circleci-config.yml

version: 2
defaults: &defaults
  working_directory: ~/project

jobs:
  ios:
    <<: *defaults
    macos:
      xcode: '10.1.0'
    steps:
      - checkout
      - run:
          name: Install dependencies
          command: npm install --ignore-engines
      - run:
          name: Install bundle
          command: bundle install
      - run:
          name: Build app
          command: bundle exec fastlane ios ci
  android:
    <<: *defaults
    docker:
      - image: sarathc/circle-android-fastlane:api-25-0.0.1
    steps:
      - checkout
      - run:
          name: Install node
          command: sudo curl https://nodejs.org/dist/v10.0.0/node-v10.0.0-linux-x64.tar.gz | sudo tar xzvf - --exclude CHANGELOG.md --exclude LICENSE --exclude README.md --strip-components 1 -C /usr/local/
      - run:
          name: Upgrade NPM
          command: sudo npm install -g npm
      - run:
          name: Install dependencies
          command: npm ci --ignore-engines
      - run:
          name: Set gradle.properties
          command: |
            mkdir -p ~/.gradle
            echo "MYAPP_RELEASE_STORE_FILE=$MYAPP_RELEASE_STORE_FILE" >> ~/.gradle/gradle.properties
            echo "MYAPP_RELEASE_KEY_ALIAS=$MYAPP_RELEASE_KEY_ALIAS" >> ~/.gradle/gradle.properties
            echo "MYAPP_RELEASE_STORE_PASSWORD=$MYAPP_RELEASE_STORE_PASSWORD" >> ~/.gradle/gradle.properties
            echo "MYAPP_RELEASE_KEY_PASSWORD=$MYAPP_RELEASE_KEY_PASSWORD" >> ~/.gradle/gradle.properties
      - run:
          name: Put keystore
          command: echo "$KEYSTORE" | base64 -d > android/app/anysticker.keystore
      - run:
          name: Set supplyfile
          command: echo "$SUPPLYFILE" | base64 -d > android/supplyfile.json
      - run: yes | $ANDROID_HOME/tools/bin/sdkmanager --licenses || echo "okay okay"
      - run:
          name: Bundle android
          command: npm run bundle-android
      - run:
          name: Install bundle
          command: bundle install
      - run:
          name: Build app
          command: bundle exec fastlane android ci
      - store_artifacts:
          path: android/app/build/outputs/apk/release/app-release.apk
workflows:
  version: 2
  build:
    jobs:
      - hold-ios:
          type: approval
      - hold-android:
          type: approval
      - ios:
          requires:
            - hold-ios
      - android:
          requires:
            - hold-android

Fastfile.rb

fastlane_version '2.105.2'

before_all do
  ensure_git_branch
  git_pull
end

platform :ios do
    desc 'Fetch certificates and provisioning profiles'
    lane :certificates do
      match(
        app_identifier: 'jonnyburger.anysticker',
        type: 'appstore',
        username: "[email protected]",
        git_url: "https://github.com/JonnyBurger/fake-repository-with-ios-certificates",
        team_id: "ABCDEFFHIJK",
        skip_docs: true
        )
      end
      
      desc 'Build the iOS   application.'
      private_lane :build do
        certificates
        increment_build_number(
        xcodeproj: './ios/anysticker.xcodeproj',
        build_number: latest_testflight_build_number(
          username: '[email protected]',
          team_name: "Jonathan Burger",
          app_identifier: 'jonnyburger.anysticker'
        ).to_i + 1
      )
      gym(
        scheme: 'anysticker',
        project: './ios/anysticker.xcodeproj',
        configuration: "Release",
        export_method: "app-store"
      )
    end

    desc 'Ship to Testflight.'
    lane :beta do
      build
      pilot(username: '[email protected]', team_name: "Jonathan Burger", skip_waiting_for_build_processing: true)
    end

    desc 'Build on CircleCI'
    lane :ci do
      setup_circle_ci
      beta
    end
end

platform :android do
    desc 'Ship to Playstore Beta.'
    lane :ci do
      gradle(task: 'clean', project_dir: 'android/')
      gradle(task: 'assemble', build_type: 'Release', project_dir: 'android/', properties: {
        versionCode: [google_play_track_version_codes(
          track: 'release',
          json_key: 'android/supplyfile.json',
          package_name: 'jonnyburger.anysticker',
        ).max || 0, google_play_track_version_codes(
          track: 'beta',
          json_key: 'android/supplyfile.json',
          package_name: 'jonnyburger.anysticker',
        ).max || 0].max + 1
      })
      supply(track: 'beta', track_promote_to: 'beta', json_key: 'android/supplyfile.json', package_name: 'jonnyburger.anysticker')
    end
end