若專案需要啟動多個 process，可以用 foreman 來管理它們。
設定
在根目錄底下新增 Procfile 檔案
設定所有要跑的指令
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| #Procfile
web: bundle exec rails s -p $PORT
worker: bundle exec rake worker
urgentworker: bundle exec rake urgent_worker
scheduler: bundle exec rake scheduler
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安裝gem foreman
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| foreman start
13:44:20 web.1 | started with pid 82891
13:44:20 worker.1 | started with pid 82892
13:44:20 urgentworker.1 | started with pid 82893
13:44:20 scheduler.1 | started with pid 82894
|
gem：
參考文件：