Push a BigCommerce Stencil theme with GitHub Actions. See https://jackharner.com/blog/bigcommerce-stencil-ci-cd-with-github-actions/ for details.

stencil-push.yml

name: Push Stencil Theme To BigCommerce
# This workflow is triggered on pushes to the Master Branch only.
on:
  push:
    branches:
      - master

jobs:
  build:
    name: Stencil Push
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Repository
        uses: actions/checkout@v1

      - name: Set Node version to 10
        uses: actions/setup-node@v1
        with:
          node-version: 10

      - name: Install Dependencies
        run: |
          npm install -g @bigcommerce/stencil-cli
          yarn

      - run: 'echo "$STENCIL" > .stencil'
        shell: bash
        env:
          STENCIL: ${{secrets.STENCIL}}

      - name: Push Theme
        run: |
          stencil push -a Light -d