github-actions

name	github-actions
description	GitHub Actions workflow patterns for React Native iOS simulator and Android emulator cloud builds with downloadable artifacts. Use when setting up CI build pipelines or downloading GitHub Actions artifacts via gh CLI and GitHub API.
license	MIT
metadata	{"author":"Callstack","tags":"github-actions, github, ci, react-native, ios, android, simulator, emulator, artifacts, gh-cli","vendored_from":"github:callstackincubator/agent-skills@0ba043ab"}

GitHub Actions Build Artifacts

Overview

Reusable GitHub Actions patterns to build React Native apps for iOS simulators and Android emulators in the cloud, then publish artifacts retrievable via gh CLI or GitHub API.

In the ATLAS app-dev system: use this for React Native CI on GitHub Actions specifically (simulator/emulator builds + artifact download). It complements expo-cicd-workflows (EAS Workflows, the managed-Expo path) and fastlane (SK-136, native store deploy) — reach for this when the project builds on GitHub Actions rather than EAS. Pairs with ship-verify (SK-128) to confirm the produced artifact is real.

When to Apply

Use this skill when:

• Creating CI workflows that build React Native simulator/emulator artifacts.
• Uploading iOS simulator and Android emulator installables from PRs or manual dispatch runs.
• Replacing local-only mobile builds with downloadable CI artifacts.
• Needing stable artifact IDs/names for scripted retrieval with gh or REST API.

Quick Reference

1. Add composite actions from gha-ios-composite-action.md and gha-android-composite-action.md.
2. Wire them into .github/workflows/mobile-build.yml from gha-workflow-and-downloads.md.
3. Upload with actions/upload-artifact@v4 and capture artifact-id output.
4. Download with gh run download or GET /repos/{owner}/{repo}/actions/artifacts/{artifact_id}/{archive_format}.

References

File	Description
gha-ios-composite-action.md	Composite action.yml for iOS simulator .app.tar.gz builds and artifact upload
gha-android-composite-action.md	Composite action.yml for Android emulator .apk builds and artifact upload
gha-workflow-and-downloads.md	End-to-end workflow wiring plus gh and REST download commands

Problem -> Skill Mapping

Problem	Start With
Need CI iOS simulator .app.tar.gz artifact	gha-ios-composite-action.md
Need CI Android emulator .apk artifact	gha-android-composite-action.md
Need one workflow to trigger both platform jobs	gha-workflow-and-downloads.md
Need scripted artifact download	gha-workflow-and-downloads.md

Source Inspiration

• callstackincubator/ios/action.yml
• callstackincubator/android/action.yml