GitLab CI for Flutter App CICD

.gitlab-ci.yml

image: "ghcr.io/cirruslabs/flutter:3.22.3"

stages:
  - build
  - deploy

variables:
  FIREBASE_CLI_VERSION: "11.5.0"
  GRADLE_USER_HOME: "/builds/$CI_PROJECT_NAMESPACE/$CI_PROJECT_NAME/.gradle"

cache:
  key: "${CI_JOB_NAME}"
  paths:
    - .gradle/wrapper
    - .gradle/caches

before_script:
  - flutter doctor
  - flutter pub get

build:
  stage: build
  script:
    - flutter build apk --release
    - ls -la build/app/outputs/flutter-apk/
  artifacts:
    paths:
      - build/app/outputs/flutter-apk/app-release.apk

deploy:
  stage: deploy
  dependencies:
    - build
  only:
    - main
  script:
    - curl -sL https://firebase.tools | bash
    - firebase appdistribution:distribute build/app/outputs/flutter-apk/app-release.apk --app $FIREBASE_APP_ID --token $FIREBASE_TOKEN --groups "testers" --release-notes "New version of ANA ONLINE is available"