init.d script template to run Thin application under user using RVM

thin-app

#! /bin/sh
### BEGIN INIT INFO
# Provides:          thin-app
# Required-Start:    $local_fs $remote_fs $network
# Required-Stop:     $local_fs $remote_fs
# Short-Description: Application description
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
### END INIT INFO

USER="user"
DAEMON_PATH="/home/$USER/thin-app"

DAEMON=thin
DAEMONOPTS="-C thin.conf.yml"

NAME=thin-app
DESC="Application description"
PIDFILE=/tmp/$NAME.0.pid
SCRIPTNAME=/etc/init.d/$NAME

su -c "source /home/$USER/.rvm/scripts/rvm; cd $DAEMON_PATH; $DAEMON $DAEMONOPTS $1" $USER

thin.conf.yml

environment: production
address: 127.0.0.1
port: 3000
socket: /tmp/thin-app.sock
servers: 3   
pid: /tmp/thin-app.pid
rackup: config.ru
log: thin.log
max_conns: 512 
timeout: 60  
max_persistent_conns: 128
daemonize: true