Node.js Upstart config file running as an unprivileged user

nodeserver.conf

description "node.js server"
author      "Wyndham Jade - http://www.wyndhamjade.com"
 
# used to be: start on startup
# until we found some mounts weren't ready yet while booting:
start on started mountall
stop on shutdown
 
# Automatically Respawn:
respawn
respawn limit 99 5

# chroot won't work unless node itself is placed within the chroot (to load node core libraries)
#chroot /etc/nodeserver
 
script
    # Not sure why $HOME is needed, but we found that it is:
    export HOME="/home/nodeserver"

    export PORT=8001
    export MONGO_URL="mongodb://user:domain.mongolab.com:33307/user"
 
    su -s /bin/sh -c 'exec "$0" "$@"' nodeserver -- /usr/local/bin/node /home/nodeserver/server.js >> /var/log/node-nodeserver.log 2>&1
end script
 
post-start script
   # Optionally put a script here that will notifiy you node has (re)started
   # /root/bin/hoptoad.sh "node.js has started!"
end script