My Jekyll Site workflow

jekyll_site_workflow.yml

name: Jekyll site CI/CD

on:
  push:
    branches:
      - source

jobs:
  build:

    runs-on: ubuntu-latest

    steps:

    - name: Cloning source branch
      uses: actions/checkout@v2
      with:
        ref: 'source'
        path: 'source'

    - name: Building site in the jekyll/builder container
      run: |
        docker run \
        -v ${{ github.workspace }}/source:/srv/jekyll -v ${{ github.workspace }}/source/_site:/srv/jekyll/_site \
        veerendrav2/my-jekyll:latest /bin/bash -c "chmod 777 /srv/jekyll && jekyll build --future"

    - name: Cloning master branch
      uses: actions/checkout@v2
      with:
        ref: 'master'
        path: 'master'

    - name: Copying _site content to master branch repo
      run: cp -R ${{ github.workspace }}/source/_site/* ${{ github.workspace }}/master

    - name: Commit files
      run: |
        cd ${{ github.workspace }}/master
        git config --local user.email "action@github.com"
        git config --local user.name "GitHub Action"
        git add *
        git commit -m "New changes" -a

    - name: Push changes
      uses: ad-m/github-push-action@master
      with:
        directory: ${{ github.workspace }}/master
        branch: 'master'
        github_token: ${{ secrets.GITHUB_TOKEN }}

https://gist.github.com/zhujunsan/a0becf82ade50ed06115