Build Flutter iOS app

github_action_build_ios.yml

name: Android build check
on: [push, pull_request]
jobs:
    build-Android:
    name: Build Android apk
    runs-on: ubuntu-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 apk package
        run: |
          cd ./rock_paper_scissors
          flutter build apk --release