Sync release branch with master on every push to master, and include productionized node_modules folder on release

prepare-release-branch.yml

name: Prepare Release Branch

on:
  push:
    branches:         # array of glob patterns matching against refs/heads. Optional; defaults to all
    - master          # triggers on pushes that contain changes in master

jobs:
  prepare-release-branch:
    name: Prepare Release Branch
    runs-on: ubuntu-latest
    steps:

    - name: Checkout
      uses: actions/[email protected]

    - run: |
        # Add origin as remote
        git remote set-url origin https://x-access-token:${GITHUB_TOKEN}@github.com/${GITHUB_REPOSITORY}.git
        # Hard-code user config
        git config user.email "${GITHUB_ACTOR}@users.noreply.github.com"
        git config user.name "${GITHUB_REPOSITORY}[bot]"
        # Make sure HEAD is not detached
        git checkout -b master
        # Fetch origin
        git fetch origin
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

    - name: Sync with release branch
      run: |
        if [ -f .git/refs/remotes/origin/release ]; then
          # refs/heads/release exists at origin
          git checkout release
          # Merge in latest master
          git merge -m "${COMMIT_MSG}" master
        else
          # refs/heads/release does not exist at origin
          git checkout -b release
        fi
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        COMMIT_MSG: |
          sync: master
          skip-checks: true

    # Install production dependencies
    - run: npm i --only=production

    - run: |
        git add --force package-lock.json node_modules
        # Look for staged changes
        if [[ $(git diff --cached --stat) != '' ]]; then
          # Changes have been staged, commit them
          git commit -m "${COMMIT_MSG}"
        fi
        # Push our changes back to the release branch
        git push origin release
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        COMMIT_MSG: |
          build: dist
          skip-checks: true