Fastlane/Mobile CI-CD Skill

Overview

This skill provides comprehensive capabilities for mobile CI/CD automation using Fastlane. It enables automated builds, testing, code signing, beta distribution, and app store deployments for both iOS and Android platforms.

Allowed Tools

• bash - Execute Fastlane commands, Ruby, and bundler
• read - Analyze Fastfile, Appfile, and configuration files
• write - Generate Fastlane configurations and lanes
• edit - Update existing Fastlane configurations
• glob - Search for Fastlane and CI configuration files
• grep - Search for patterns in CI/CD configurations

Capabilities

Fastlane Configuration

1. Fastfile Setup

   • Create platform-specific lanes
   • Configure before_all and after_all hooks
   • Implement error handling with error blocks
   • Set up environment variables
   • Configure lane options and parameters

2. Appfile Configuration

   • Configure app identifiers
   • Set up Apple ID and team settings
   • Configure Google Play credentials
   • Set environment-specific values

iOS Code Signing

1. Match (Code Signing)

   • Configure Git-based certificate storage
   • Set up development, adhoc, and appstore profiles
   • Implement automatic certificate renewal
   • Handle multiple team configurations
   • Configure readonly mode for CI

2. Manual Code Signing

   • Import certificates with cert action
   • Generate provisioning profiles with sigh
   • Configure entitlements
   • Handle enterprise distribution

Build Automation

1. iOS Builds

   • Configure gym for archive creation
   • Set up build configurations
   • Handle bitcode settings
   • Configure export options
   • Implement build number automation

2. Android Builds

   • Configure gradle action
   • Build APK and AAB files
   • Handle signing configurations
   • Configure build variants
   • Implement version code automation

Testing

1. Test Automation

   • Run scan for iOS testing
   • Configure test schemes and destinations
   • Handle test parallelization
   • Generate test reports
   • Implement retry logic

2. Android Testing

   • Run gradle test tasks
   • Configure instrumented tests
   • Integrate with Firebase Test Lab
   • Generate coverage reports

Beta Distribution

1. TestFlight

   • Configure pilot for TestFlight uploads
   • Manage test groups
   • Handle changelog updates
   • Configure external testing
   • Implement waiting for processing

2. Firebase App Distribution

   • Configure firebase_app_distribution
   • Manage tester groups
   • Handle release notes
   • Configure Android and iOS distribution

App Store Deployment

1. App Store Connect

   • Configure deliver for metadata
   • Upload screenshots with snapshot
   • Submit for review
   • Handle phased releases
   • Manage app versions

2. Google Play Store

   • Configure supply for Play Store
   • Manage release tracks
   • Upload AAB files
   • Handle staged rollouts
   • Configure in-app updates

CI Integration

1. GitHub Actions

   • Configure workflow files
   • Set up secrets management
   • Implement caching strategies
   • Configure matrix builds
   • Handle artifacts

2. Other CI Platforms

   • Bitrise integration
   • CircleCI configuration
   • Jenkins pipeline setup
   • Azure DevOps integration

Target Processes

This skill integrates with the following processes:

• mobile-cicd-fastlane.js - CI/CD pipeline setup
• automated-release-management.js - Release automation
• ios-appstore-submission.js - iOS deployment
• android-playstore-publishing.js - Android deployment
• beta-testing-setup.js - Beta distribution

Dependencies

Required

• Ruby 3.0+
• Bundler
• Fastlane
• Xcode (for iOS)
• Android SDK (for Android)

Optional

• Firebase CLI
• GitHub CLI
• AWS CLI (for S3 storage)

Configuration

Project Structure

project-root/
├── fastlane/
│   ├── Fastfile
│   ├── Appfile
│   ├── Matchfile
│   ├── Pluginfile
│   ├── Gymfile
│   ├── Scanfile
│   ├── Deliverfile
│   ├── metadata/
│   │   ├── en-US/
│   │   │   ├── description.txt
│   │   │   ├── keywords.txt
│   │   │   └── release_notes.txt
│   │   └── review_information/
│   └── screenshots/
├── Gemfile
└── Gemfile.lock

Gemfile

# Gemfile
source "https://rubygems.org"

gem "fastlane"
gem "cocoapods" # For iOS

plugins_path = File.join(File.dirname(__FILE__), 'fastlane', 'Pluginfile')
eval_gemfile(plugins_path) if File.exist?(plugins_path)

Usage Examples

Basic Fastfile

# fastlane/Fastfile
default_platform(:ios)

before_all do
  ensure_git_status_clean
  git_pull
end

platform :ios do
  desc "Run tests"
  lane :test do
    scan(
      scheme: "MyApp",
      devices: ["iPhone 15 Pro"],
      code_coverage: true,
      output_directory: "./fastlane/test_output"
    )
  end

  desc "Build and upload to TestFlight"
  lane :beta do
    increment_build_number(xcodeproj: "MyApp.xcodeproj")
    match(type: "appstore", readonly: true)
    gym(
      scheme: "MyApp",
      export_method: "app-store",
      output_directory: "./build"
    )
    pilot(
      skip_waiting_for_build_processing: true,
      changelog: "Bug fixes and improvements"
    )
    commit_version_bump(
      message: "Bump build number [skip ci]",
      xcodeproj: "MyApp.xcodeproj"
    )
    push_to_git_remote
  end

  desc "Deploy to App Store"
  lane :release do
    capture_screenshots
    increment_version_number(bump_type: "patch")
    increment_build_number
    match(type: "appstore", readonly: true)
    gym(scheme: "MyApp", export_method: "app-store")
    deliver(
      submit_for_review: true,
      automatic_release: false,
      force: true,
      precheck_include_in_app_purchases: false
    )
  end

  error do |lane, exception|
    slack(
      message: "Lane #{lane} failed: #{exception.message}",
      success: false
    )
  end
end

platform :android do
  desc "Run tests"
  lane :test do
    gradle(task: "testDebugUnitTest")
  end

  desc "Build and upload to Firebase App Distribution"
  lane :beta do
    gradle(
      task: "bundle",
      build_type: "Release"
    )
    firebase_app_distribution(
      app: ENV["FIREBASE_APP_ID"],
      groups: "internal-testers",
      release_notes: "Bug fixes and improvements"
    )
  end

  desc "Deploy to Play Store"
  lane :release do
    gradle(
      task: "bundle",
      build_type: "Release"
    )
    supply(
      track: "production",
      aab: "./app/build/outputs/bundle/release/app-release.aab",
      skip_upload_metadata: true,
      skip_upload_images: true,
      skip_upload_screenshots: true
    )
  end
end

Matchfile

# fastlane/Matchfile
git_url("git@github.com:organization/certificates.git")
storage_mode("git")

type("appstore")

app_identifier(["com.example.myapp", "com.example.myapp.widget"])
username("developer@example.com")

# For CI environments
readonly(is_ci)

# Platform
platform("ios")

Appfile

# fastlane/Appfile
# iOS
app_identifier("com.example.myapp")
apple_id("developer@example.com")
team_id("XXXXXXXXXX")
itc_team_id("XXXXXXXXXX")

# Android
json_key_file("./fastlane/play-store-key.json")
package_name("com.example.myapp")

# Environment-specific
for_platform :ios do
  for_lane :beta do
    app_identifier("com.example.myapp.beta")
  end
end

GitHub Actions Workflow

# .github/workflows/ios-deploy.yml
name: iOS Deploy

on:
  push:
    branches: [main]
    tags: ['v*']

jobs:
  deploy:
    runs-on: macos-14
    steps:
      - uses: actions/checkout@v4

      - name: Set up Ruby
        uses: ruby/setup-ruby@v1
        with:
          ruby-version: '3.2'
          bundler-cache: true

      - name: Install dependencies
        run: bundle install

      - name: Set up certificates
        env:
          MATCH_PASSWORD: ${{ secrets.MATCH_PASSWORD }}
          MATCH_GIT_BASIC_AUTHORIZATION: ${{ secrets.MATCH_GIT_AUTH }}
        run: bundle exec fastlane match appstore --readonly

      - name: Build and deploy
        env:
          APP_STORE_CONNECT_API_KEY_ID: ${{ secrets.ASC_KEY_ID }}
          APP_STORE_CONNECT_API_ISSUER_ID: ${{ secrets.ASC_ISSUER_ID }}
          APP_STORE_CONNECT_API_KEY: ${{ secrets.ASC_KEY }}
        run: |
          if [[ $GITHUB_REF == refs/tags/* ]]; then
            bundle exec fastlane ios release
          else
            bundle exec fastlane ios beta
          fi

      - name: Upload artifacts
        uses: actions/upload-artifact@v4
        with:
          name: build-artifacts
          path: |
            ./build/*.ipa
            ./fastlane/test_output/

Android GitHub Actions

# .github/workflows/android-deploy.yml
name: Android Deploy

on:
  push:
    branches: [main]
    tags: ['v*']

jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Set up JDK
        uses: actions/setup-java@v4
        with:
          java-version: '17'
          distribution: 'temurin'
          cache: gradle

      - name: Set up Ruby
        uses: ruby/setup-ruby@v1
        with:
          ruby-version: '3.2'
          bundler-cache: true

      - name: Decode keystore
        run: |
          echo "${{ secrets.KEYSTORE_BASE64 }}" | base64 --decode > app/release.keystore

      - name: Create key.properties
        run: |
          echo "storeFile=release.keystore" >> android/key.properties
          echo "storePassword=${{ secrets.KEYSTORE_PASSWORD }}" >> android/key.properties
          echo "keyAlias=${{ secrets.KEY_ALIAS }}" >> android/key.properties
          echo "keyPassword=${{ secrets.KEY_PASSWORD }}" >> android/key.properties

      - name: Create Play Store key
        run: echo '${{ secrets.PLAY_STORE_KEY }}' > fastlane/play-store-key.json

      - name: Build and deploy
        run: |
          if [[ $GITHUB_REF == refs/tags/* ]]; then
            bundle exec fastlane android release
          else
            bundle exec fastlane android beta
          fi

Quality Gates

Build Verification

• All tests pass before deployment
• Code coverage meets threshold
• No compiler warnings
• Static analysis passes

Release Criteria

• Version number incremented
• Changelog updated
• Screenshots current
• Metadata complete

Security

• Certificates stored securely
• Secrets not in repository
• API keys rotated regularly

Related Skills

• app-store-connect - App Store management
• google-play-console - Play Store management
• mobile-testing - Test automation

Version History

• 1.0.0 - Initial release with Fastlane 2.x support