Build iOS check

github_action_build_ios.yml

name: iOS build check
on: [push, pull_request]
jobs:
  build-iOS:
    name: Build iOS package
    runs-on: macOS-latest
    steps:
      - uses: actions/checkout@v1
      - uses: actions/setup-java@v1
        with:
          java-version: '12.x'
      - uses: subosito/flutter-action@v1
        with:
          flutter-version: '1.9.1+hotfix.4'
          channel: 'stable'
      - name: Upgrade flutter
        run: |
          flutter channel master
          flutter upgrade
      - name: build iOS package
        run: |
          cd ./rock_paper_scissors
          flutter build ios --release --no-codesign