Wercker Dokku deploy

wercker-dokku-deploy.yml

deploy:
  steps:
    - add-to-known_hosts:
        hostname: $HOSTNAME
    - add-ssh-key:
        keyname: KEY
    - script:
        name: Push to dokku
        code: |
          git remote add dokku dokku@$HOSTNAME:$APP
          git push dokku HEAD:master