To run a background process with Capistrano is so difficult. I have tried few different ways and I found the working one.
It turns out that you need to use a command, nohup together with &, which is put in a shell script file.
Then in Capistrano file (deploy.rb), you'll need to use run the shell script with >/dev/null 2>&1.
And that's it.
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I have tried use :pty=>true option on the Capistrano's run command. It produces a very strange behavior. Sometimes the background process is started and sometimes it is not...
And without >/dev/null 2>&1, there will be an output, which blocks Capistrano from proceeding forward...
