Expo Preview Deployment for your PRs. For Expo Managed

expo-preview.yml

name: Expo Preview

on: [pull_request]

jobs:
  preview:
    name: Deploy Pull Request
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v2

      - name: Setup node
        uses: actions/setup-node@v1
        with:
          node-version: 14.x

      - name: Configure Expo
        uses: expo/expo-github-action@v5
        with:
          expo-version: 4.x
          expo-token: ${{ secrets.EXPO_TOKEN }}
          expo-cache: true

      - name: Yarn install
        run: yarn install

      - name: Expo publish
        run: expo publish --release-channel=pr-${{ github.event.number }}

      - name: Get Expo preview URL
        id: expo
        run: echo "::set-output name=path::@${{ secrets.EXPO_USERNAME }}/projects/${{ secrets.EXPO_PROJECTNAME }}?release-channel=pr-${{ github.event.number }}"

      - name: Get Expo manifest URL
        id: expo-manifest
        run: echo "::set-output name=path::@${{ secrets.EXPO_USERNAME }}/${{ secrets.EXPO_PROJECTNAME }}?release-channel=pr-${{ github.event.number }}"

      - name: Notify
        uses: peter-evans/create-or-update-comment@v1
        if: ${{ github.event_name == 'pull_request' && (github.event.action == 'opened' || github.event.action == 'reopened') }}
        with:
          issue-number: ${{ github.event.number }}
          body: |
            This pull request preview deployment is now available.

            ✅ Preview: [https://expo.io/${{ steps.expo.outputs.path }}](https://expo.io/${{ steps.expo.outputs.path }})

            <a href="https://exp.host/${{ steps.expo-manifest.outputs.path }}"><img src="https://api.qrserver.com/v1/create-qr-code/?size=400x400&data=exp://exp.host/${{ steps.expo-manifest.outputs.path }}" height="200px" width="200px"></a>

Add this file to the .github/workflows folder in your repository.

You need to add EXPO_TOKEN, EXPO_USERNAME and EXPO_PROJECTNAME to your GitHub repo secrets:

• EXPO_TOKEN is an access token that you can create in the settings
• EXPO_USERNAME is your username
• EXPO_PROJECTNAME is your project name, i.e. your app slug

If you have a monorepo, you can specify the working-directory like this:

name: Expo Preview

defaults:
  run:
    working-directory: packages/app/

More info on GitHub Actions and Expo GitHub Actions:
https://docs.github.com/en/actions
https://github.com/expo/expo-github-action

Is it possible to run expo/expo-github-action from inside a subfolder? Like <root>/my-react-native-project.