Ubuntu 20.04 gunicorn, nginx, django 세팅하기

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출처 : How to keep environment variables when using sudo

$ export HTTP_PROXY=foof
$ sudo -E bash -c 'echo $HTTP_PROXY' 
-E, --preserve-env
             Indicates to the security policy that the user wishes to preserve their
             existing environment variables.  The security policy may return an error
             if the user does not have permission to preserve the environment.