A Github Actions workflow configuration for using Deployer on a shared hosting service.

deployer.yml

# Place your Github Actions workflow configurations in project_dir/.github/workflows/
#
# This configuration requires the following 4 repository secret variables:
# PRIVATE_KEY (which will contain the content of the private key for your repository. Either reuse the one from earlier, or better, make a new one.)
# KNOWN_HOSTS (contains a hash identifying the remote server as the genuine one. You will have the hash for the server in your local .ssh directory in the file known_hosts if you have connected to it before.)
# TARGET_HOST (the url for server when connecting with SSH. On one.com it has the form ssh.example.com)
# TARGET_USER (the SSH user for connecting to a remote server. On one.com the domain-name serves as the username, so it has the form of example.com).
# 
# You are also required to update host_name for the SSH configuration on line 35 to match up with the host specified in your Deployer recipe. 

name: Deploy Symfony
on: [workflow_dispatch, push]
jobs:
  deploy:
    name: Deploy to prod
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v1
      - name: Setup PHP
        uses: shivammathur/setup-php@master
        with:
          php-version: 7.4
      - name: Configure SSH
        env:
          SSH_KEY: ${{ secrets.PRIVATE_KEY }}
          KNOWN_HOSTS: ${{ secrets.KNOWN_HOSTS }}
          SSH_HOST: ${{ secrets.TARGET_HOST }}
          SSH_USER: ${{ secrets.TARGET_USER }}
        run: |
          mkdir -p ~/.ssh/
          echo "$KNOWN_HOSTS" > ~/.ssh/known_hosts
          echo "$SSH_KEY" > ~/.ssh/staging.key
          chmod 600 ~/.ssh/staging.key
          cat >>~/.ssh/config <<END
            Host host_name
              HostName $SSH_HOST
              User $SSH_USER
              IdentityFile ~/.ssh/staging.key
              StrictHostKeyChecking no
          END
      - name: Set Up Deployer
        run: curl -LO https://deployer.org/deployer.phar && mv deployer.phar bin/dep && sudo chmod +x bin/dep
      - name: Deploy Symfony
        uses: deployphp/action@master
        with:
          private-key: ${{ secrets.PRIVATE_KEY }}
          known-hosts: ${{ secrets.KNOWN_HOSTS }}
          dep: mydeploy