start gunicorn with initializing env var

gunicorn_start

$ cat ../bin/gunicorn_start 
#!/bin/bash
source $(dirname $0)/init.cfg

echo "Starting Gunicorn for $NAME"

exec ../bin/gunicorn ${DJANGO_WSGI_MODULE}:application \
  --name $NAME \
  --workers $NUM_WORKERS \
  --user=$USER --group=$GROUP \
  --log-level=$LOG_LEVEL \
  --bind=$IP:$PORT \
  --access-logfile $ACCESSFILE --error-logfile $ERRORFILE

init.cfg

$ cat ../bin/init.cfg 
NAME="th"                                  # Name of the application
DJANGODIR=/path/that/contains/manage.py/   # Django project directory

USER=foxmask # the user to run as
GROUP=foxmask                                      # the group to run as
NUM_WORKERS=1                                     # how many worker processes should Gunicorn spawn
DJANGO_SETTINGS_MODULE=th.settings             # which settings file should Django use
DJANGO_WSGI_MODULE=th.wsgi                     # WSGI module name
IP=127.0.0.1
PORT=8080
#LOG
LOGDIR=/path/that/contains/log/of/the/app

#LOG_LEVEL=DEBUG
LOG_LEVEL=INFO
ERRORFILE="$LOGDIR$NAME-error.log"
ACCESSFILE="$LOGDIR$NAME-access.log"

HTTPS=on

# Activate the virtual environment
cd $DJANGODIR
source ../bin/activate
export DJANGO_SETTINGS_MODULE=$DJANGO_SETTINGS_MODULE
export PYTHONPATH=$DJANGODIR:$PYTHONPATH