Include this main.yml unalerted to the file path .github/workflows. Remember to set the required Github secrets to validate this is working. Additionally all your work needs to be organized inside the public_html folder in the repo.

main.yml

# This is a basic workflow to help you get started with Actions

name: CI

# Controls when the action will run. Triggers the workflow on push or pull request
# events but only for the master branch
on:
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]

# A workflow run is made up of one or more jobs that can run sequentially or in parallel
jobs:
  # This workflow contains a single job called "build"
  build:
    # The type of runner that the job will run on
    runs-on: ubuntu-latest

    # Steps represent a sequence of tasks that will be executed as part of the job
    steps:
    # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
    - uses: actions/checkout@v2
    
    # delete the directory
    - name: Clear existing directories
      uses: appleboy/ssh-action@master
      with:
        host: ${{ secrets.HOST}}
        username: ${{ secrets.USERNAME}}
        password: ${{ secrets.PASSWORD}}
        port: ${{ secrets.PORT}}
        script: rm -rf public_html
        
    # copy files into public_html folder
    - name: Copy from Repo to Linux Lab
      uses: garygrossgarten/github-action-scp@v0.5.3
      with:
        # Path to the local folder you want to copy.
        local: public_html
        # Path on the remote server to copy to.
        remote: public_html
        # Hostname or IP address of the server.
        host: ${{ secrets.HOST}}  
        # Username for authentication.
        username: ${{ secrets.USERNAME}}
        # Port number of the server.
        port: ${{ secrets.PORT}}
        # Password for password-based user authentication.
        password: ${{ secrets.PASSWORD }} 
    
    # Set proper permission as everything by default is blocked
    - name: Set Permissions
      uses: appleboy/ssh-action@master
      with:
        host: ${{ secrets.HOST}}
        username: ${{ secrets.USERNAME}}
        password: ${{ secrets.PASSWORD}}
        port: ${{ secrets.PORT}}
        script: |
          pwd
          chmod 711 ~
          chmod 755 -R public_html