flutter_tracker/.github/workflows/build.yml

name: CI
on:
  push:
    branches: [ master , main]
  pull_request:
    branches: [ master , main]
jobs:
  build:
    strategy:
      matrix:
        os: [ubuntu-latest]
    runs-on: ${{matrix.os}}
    steps:
      - uses: actions/checkout@v2

      - name: Setup Java JDK
        uses: actions/setup-java@v2
        with:
          distribution: 'adopt'
          java-version: "11"

      - name: Flutter action
        uses: subosito/flutter-action@v1.5.3
        with:
          channel: "stable"
          flutter-version: "2.5.2"

      - name: Cache Dependencies
        id: cache
        uses: actions/cache@v2
        with:
          path: |
            ~/.gradle/caches
            ~/.gradle/wrapper
            Pods
          key: |
            ${{runner.OS}}-gradle-caches-${{ hashFiles('pubspec.lock') }}
            ${{ runner.os }}-pods-${{ hashFiles('**/Podfile.lock') }}
          restore-keys: |
            ${{ runner.os }}-pods-
            ${{ runner.os }}-gradle-

      - name: Install Dependencies
        if: steps.cache.outputs.cache-hit != 'true'
        run: flutter pub get

      - name: Build apk
        if: ${{ runner.os == 'Linux' }}
        run: flutter build apk --debug --no-sound-null-safety

      # output some file:
      - name: artifact
        uses: actions/upload-artifact@v2
        with:
          name: ${{runner.OS}}-artifact
          path: |
            # build/app/outputs/flutter-apk/**/*.apk
            build/app/outputs/flutter-apk/app.apk
            build/ios/**/*.ipa
            build/web/web-app.zip
            build/windows/runner/Release/