--- name: fastlane-ff98eb6c7038 description: >- Automate mobile app builds, signing, and deployment with Fastlane — CI/CD for iOS and Android. Use when someone asks to "automate App Store deployment", "Fastlane", "automate iOS build", "CI/CD for mobile", "automate Play Store upload", "code signing automation", or "mobile release pipeline". Covers build automation, code signing, TestFlight, Play Store, screenshots, and CI. license: Apache-2.0 compatibility: "fastlane 2.240.x needs Ruby 3.1 or newer. macOS with Xcode for iOS builds; any OS for Android." metadata: author: terminal-skills version: "1.1.0" category: devops tags: "mobile, cicd, fastlane, ios, android" repository: https://github.com/fastlane/fastlane --- # Fastlane ## Overview Fastlane automates the tedious parts of mobile app releases — building, code signing, uploading to TestFlight/Play Store, taking screenshots, and managing certificates. One command to go from code to production. Used by most professional mobile teams to eliminate manual Xcode/Google Play Console workflows. ## When to Use - Publishing to App Store / Play Store manually and it's painful - Code signing is a nightmare across team members - Need automated CI/CD for mobile builds - Want automated screenshots for store listings - Managing certificates and provisioning profiles ## Instructions ### Setup ```bash # Recommended: pin the version per project with Bundler cd my-app printf 'source "https://rubygems.org"\ngem "fastlane"\n' > Gemfile bundle install bundle exec fastlane init # writes fastlane/Appfile and fastlane/Fastfile # Alternatives: brew install fastlane (macOS), gem install fastlane ``` Run lanes with `bundle exec fastlane ios beta` (platform, then lane). Current release: 2.240.1; it needs Ruby 3.1 or newer. For uploads to App Store Connect use an API key (Users and Access, Integrations, App Store Connect API) rather than an Apple ID password, which triggers two-factor prompts that CI cannot answer. ### iOS Configuration ```ruby # fastlane/Fastfile — iOS build and deploy automation default_platform(:ios) platform :ios do desc "Push a new beta build to TestFlight" lane :beta do setup_ci # on CI only: creates a temporary keychain for signing app_store_connect_api_key( key_id: ENV["ASC_KEY_ID"], issuer_id: ENV["ASC_ISSUER_ID"], key_content: ENV["ASC_KEY_P8"], # contents of the .p8 file ) match(type: "appstore", readonly: true) # Increment build number increment_build_number( build_number: latest_testflight_build_number + 1 ) # Build the app build_app( workspace: "MyApp.xcworkspace", scheme: "MyApp", export_method: "app-store", ) # Upload to TestFlight upload_to_testflight( skip_waiting_for_build_processing: true, ) # Notify team slack( message: "New iOS beta uploaded to TestFlight", slack_url: ENV["SLACK_WEBHOOK"], ) end desc "Deploy to App Store" lane :release do app_store_connect_api_key( key_id: ENV["ASC_KEY_ID"], issuer_id: ENV["ASC_ISSUER_ID"], key_content: ENV["ASC_KEY_P8"], ) build_app( workspace: "MyApp.xcworkspace", scheme: "MyApp", export_method: "app-store", ) upload_to_app_store( force: true, # Skip HTML preview verification submit_for_review: true, automatic_release: true, precheck_include_in_app_purchases: false, ) end desc "Manage code signing with match" lane :certificates do match( type: "appstore", app_identifier: "com.mycompany.myapp", readonly: true, ) end end ``` ### Android Configuration ```ruby # fastlane/Fastfile — Android build and deploy platform :android do desc "Build and upload to Google Play internal testing" lane :beta do gradle( task: "clean bundle", build_type: "Release", # produces an .aab; upload_to_play_store picks it up automatically properties: { "android.injected.signing.store.file" => ENV["KEYSTORE_PATH"], "android.injected.signing.store.password" => ENV["KEYSTORE_PASSWORD"], "android.injected.signing.key.alias" => ENV["KEY_ALIAS"], "android.injected.signing.key.password" => ENV["KEY_PASSWORD"], }, ) upload_to_play_store( track: "internal", json_key: ENV["PLAY_JSON_KEY_PATH"], # service-account JSON with Play Console access ) end desc "Promote internal to production" lane :release do upload_to_play_store( track: "internal", track_promote_to: "production", rollout: "0.1", # 10% staged rollout json_key: ENV["PLAY_JSON_KEY_PATH"], ) end end ``` ### Code Signing with Match ```bash # Initialize match (stores certs in Git repo or cloud) fastlane match init # Generate certificates fastlane match development fastlane match appstore # On CI — read-only mode (don't create new certs) bundle exec fastlane match appstore --readonly # Needed env vars on CI: MATCH_PASSWORD (decrypts the repo), MATCH_GIT_URL or Matchfile git_url ``` ### CI Integration ```yaml # .github/workflows/release-ios.yml name: iOS Release on: push: tags: ["v*"] jobs: build: runs-on: macos-latest steps: - uses: actions/checkout@v4 - name: Setup Ruby uses: ruby/setup-ruby@v1 with: { bundler-cache: true } - name: Install CocoaPods run: pod install --project-directory=ios - name: Deploy to TestFlight env: ASC_KEY_ID: ${{ secrets.ASC_KEY_ID }} ASC_ISSUER_ID: ${{ secrets.ASC_ISSUER_ID }} ASC_KEY_P8: ${{ secrets.ASC_KEY_P8 }} MATCH_PASSWORD: ${{ secrets.MATCH_PASSWORD }} MATCH_GIT_URL: ${{ secrets.MATCH_REPO }} run: bundle exec fastlane ios beta ``` ## Examples ### Example 1: Set up mobile CI/CD **User prompt:** "Automate our iOS and Android builds — build on every PR, deploy to TestFlight/Play Store on tag." The agent will create Fastlane lanes for building, signing, and deploying, set up match for code signing, and configure GitHub Actions workflows. Result: `bundle exec fastlane ios beta` builds, signs and uploads a TestFlight build; `bundle exec fastlane android beta` uploads an .aab to the internal track. ### Example 2: Automate App Store screenshots **User prompt:** "Generate App Store screenshots in all required sizes automatically." The agent will set up Fastlane snapshot (`bundle exec fastlane snapshot init`) with UI tests, run `capture_screenshots` across the device sizes and languages in `Snapfile`, and optionally frame them with `frame_screenshots`. Result: `fastlane/screenshots/en-US/` (and one folder per language) holds one image per device and test step, ready for `upload_to_app_store`. ## Guidelines - **`fastlane beta` for testing, `fastlane release` for production** — separate lanes - **`match` for code signing** — stores certs in Git, all team members use the same ones - **Increment build number automatically** — `increment_build_number` for iOS; Android has no built-in action for `versionCode`, so compute it in Gradle or use a plugin such as `fastlane-plugin-versioning_android` - **`export_method`** — Xcode 15.3 and later accept `"app-store-connect"` as the new name for `"app-store"`; use the one your Xcode supports - **macOS required for iOS builds** — use GitHub Actions macOS runners - **Secrets from environment variables** — keystore passwords, API keys and the Play JSON key come from CI secrets or an untracked `fastlane/.env`; never commit them - **`Appfile` for app metadata** — app identifier, Apple ID, team ID - **`supply` for Play Store metadata** — descriptions, changelogs, screenshots - **`precheck` validates before submission** — catches common rejection reasons - **Lanes are composable** — call one lane from another - **Plugins extend functionality** — `fastlane-plugin-firebase_app_distribution` etc. --- Source attribution: terminal-skills Original project: https://github.com/TerminalSkills/skills/blob/8a9852d489f274538be9bf1c9121aeb403750b1c/skills/fastlane/SKILL.md License: Apache-2.0 License information: https://www.apache.org/licenses/LICENSE-2.0 Original upstream instructions; downloaded from Mega AI Hub. ## Upstream license notice Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. 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