deploy.yml

# https://maxschmitt.me/posts/github-actions-ssh-key
---
name: Deploy

on:
  workflow_dispatch:
    inputs:
      environment:
        description: 'Deployment Environment'
        required: true
        default: 'staging'
        type: choice
        options:
        - staging
        - production
    

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v4
      with:
        fetch-depth: 0      

    - name: Add SSH key
      run: |
        mkdir -p /home/runner/.ssh
        echo "${{ secrets.DOKKU_HOST_KEY }}" >> /home/runner/.ssh/known_hosts
        echo "${{ secrets.SSH_PRIVATE_KEY }}" >> /home/runner/.ssh/github_actions
        chmod 600 /home/runner/.ssh/github_actions
        echo 'Host dokku
          Hostname ${{ secrets.DOKKU_HOST_URL }}
          IdentityFile /home/runner/.ssh/github_actions
          User dokku' >> /home/runner/.ssh/config

    - name: Init Git and deploy
      run: |
        git config --global user.email "actions@github.com"
        git config --global user.name "GitHub actions"

        git remote add dokku dokku:${{ inputs.environment }}
        git push dokku master -f