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Deploy Preview Action

A GitHub action to deploy preview environments for static apps using GitHub Pages.

How it works

This action expects you to checkout and build your static assets. After that, it will run next steps:

  • Publish the contents from the folder of your choice into a branch where you should have configured GitHub Pages to be served.
  • Use the branch name to create a sub-folder with your contents. That way, if your repository is my-org/my-repo, you will be able to access the preview env in https://my-org.github.io/my-repo/main
  • If you run this action during pull_request or pull_request_target events: publish a comment after the preview env is ready, with the URL from previous step.

Usage

name: Build and Deploy

on:
  pull_request: null

jobs:
  build-and-deploy:
    runs-on: ubuntu-20.04
    steps:
      - name: Checkout
        uses: actions/checkout@v2
      - name: Install and Build
        run: |
          npm install
          npm run build

      - name: Deploy
        uses: shlinkio/[email protected]
        with:
          branch: gh-pages # The branch from where the GitHub Pages are served (defaults to preview-env)
          folder: build # The folder where the artifacts to publish are (defaults to the project root)

Configuration

Param Description Required
branch The name of the branch where GitHub Pages are getting served. Defaults to preview-env. No
folder The folder including the static contents to deploy. Defaults to the project root. No

Considerations

  • Every deployment generates a sub-folder. This action does not take care of deleting them.
  • Some static pages or statically generated pages expect to be served from the root of the domain. This action deploys on a sub-folder, so you may need extra steps to ensure your app works once deployed.