A Github action that builds Dart/Flutter APKs for Android as artifacts that can be downloaded after the build completes

main.yml

name: Build and Release APK

on:
  push:
    branches:
      - main

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
    - uses: subosito/flutter-action@v2
      with:
        channel: 'master'
    - run: flutter pub get
    - run: flutter build apk --profile
    - name: Upload APK
      uses: actions/upload-artifact@v2
      with:
        name: profile-apk
        path: build/app/outputs/flutter-apk/app-profile.apk