Update a rackspace nodejs delopyment

clone.bash

#!/bin/bash -e

cd /var/apps

GIT=`which git`
REPO=$1

echo repo: $REPO

## Get the hash othe origin/master
HASH=$(eval GIT_SSH=/var/apps/deploy-ssh-wrapper $GIT ls-remote $REPO refs/heads/master | awk '{print $1}')

## Clone origin master
if [ ! -d "releases/$HASH" ]; then
        echo cloning: releases/$HASH
        GIT_SSH=/var/apps/deploy-ssh-wrapper $GIT clone $REPO --depth=1 releases/$HASH

        ## Reset symlink
        rm current
        ln -s releases/$HASH current

        ## update
        cd current
        npm install
        cd -
else
        echo clone exists: releases/$HASH
fi

source env.bash
## restart server (stop/restart to get new environment)
forever stop current/server.js
forever start current/server.js