GitHub Actions Script To Host Flutter Web App on Firebase Using Envify.

script.yml

# This file was auto-generated by the Firebase CLI
# https://github.com/firebase/firebase-tools

name: Deploy to Firebase Hosting on merge
"on":
  push:
    branches:
      - master
jobs:
  build_and_deploy:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2

      - uses: actions/setup-java@v1
        with:
          java-version: "12.x"

      - uses: subosito/flutter-action@v1
        with:
          channel: "master"

      - name: "Decode Environment File"
        run: sudo echo "${ENV_SECRET// /}" | base64 --decode > .env
        env:
          ENV_SECRET: ${{ secrets.ENV_SECRET }}

      - name: "Decode App Config File"
        run: |
          mkdir -p lib/config
          sudo echo "${APP_CONFIG// /}" | base64 --decode > lib/config/env.dart
        env:
          APP_CONFIG: ${{ secrets.APP_CONFIG }}
          
      - name: "Run flutter pub get"
        run: flutter pub get

      - name: "Inject Environment Variables"
        run: flutter pub run build_runner build --delete-conflicting-outputs

      - name: "Build Web App"
        run: flutter build web
      - uses: FirebaseExtended/action-hosting-deploy@v0
        with:
          repoToken: "${{ secrets.GITHUB_TOKEN }}"
          firebaseServiceAccount: "${{ secrets.FIREBASE_SERVICE_ACCOUNT_FIREBASE_PROJECT_ID }}"
          channelId: live
          projectId: firebase-project-id