use start-stop-deamon in init scripts

etc/init/pandora-encoding.conf

@@ -12,14 +12,17 @@ env VENV=/srv/pandora
 env USER=pandora
 env HOME=/home/pandora
 
-script
+pre-start script
 test -e /var/log/pandora || (mkdir -p /var/log/pandora && chown $USER:$USER /var/log/pandora)
 test -e /var/run/pandora || (mkdir -p /var/run/pandora && chown $USER:$USER /var/run/pandora)
-cd $VENV/pandora
-exec /usr/bin/sudo -u $USER $VENV/bin/python $VENV/pandora/manage.py celeryd \
-                   -Q encoding \
-                   -n pandora-encoding \
-                   --pidfile /var/run/pandora/pandora-encoding.pid \
-                   -f /var/log/pandora/pandora-encoding.log \
-                   -l INFO
 end script
+
+exec start-stop-daemon \
+    --start -c $USER -d $VENV/pandora \
+    -n pandora-encoding --exec $VENV/bin/python -- \
+    $VENV/pandora/manage.py celeryd \
+       -Q encoding \
+       -n pandora-encoding \
+       --pidfile /var/run/pandora/pandora-encoding.pid \
+       -f /var/log/pandora/pandora-encoding.log \
+       -l INFO