===== アプリケーション起動 =====
==== コマンド形式 ====
<code bash>
ps:start <app>                  # アプリケーション指定
ps:startall                     # 全アプリケーション
</code>

==== 実行例 ====
=== コマンド ===
<code bash>
dokku ps:start ruby-getting-started
</code>

=== 出力結果 ===
<code>
-----> Releasing ruby-getting-started (dokku/ruby-getting-started:latest)...
-----> Deploying ruby-getting-started (dokku/ruby-getting-started:latest)...
-----> App Procfile file found (/home/dokku/ruby-getting-started/DOKKU_PROCFILE)
       DOKKU_SCALE declares scale -> web=1
-----> Attempting pre-flight checks
       For more efficient zero downtime deployments, create a file CHECKS.
       See http://dokku.viewdocs.io/dokku/deployment/zero-downtime-deploys/ for examples
       CHECKS file not found in container: Running simple container check...
-----> Waiting for 10 seconds ...

～～～～ 省略 ～～～～
</code>