reset/update script to deploy a new stable version of a rails 4.x app served by Puma

reset_rails_app.sh

#!/bin/bash

# reset/update script to deploy a new stable version of a rails 4.x app served by Puma.

### REQUIREMENTS ###

# this script makes use of another script, 'pumascript'.you can find it in my gists.
# http://gist.github.com/pirafrank

# this script assumes RAILS_ENV is set to 'production' on your server.
# put 'export RAILS_ENV=production' in bashrc to do so

### NOTES ###

# written in a hurry by frank pira.
# i'm wrong, never hurry when writing code.
# write code responsibly.
# feel free to fork this or to let me know about any bugs.

### AUTHOR ###

# fpira.com <dev[at]fpira[dot]com

### LICENSE ###

# released under the GNU GPLv3 license.
# you can read it here http://www.gnu.org/licenses/gpl-3.0.html

### VARIABLES ###

DEPLOY_PATH = "." # write here the abs path of your app (e.g. /var/www/rails/awesomeapp)

### SCRIPT ###

cd "$DEPLOY_PATH"

# stopping servers...
echo "stopping puma..."
pumascript stop
echo "stopping delayedjob..."
bin/delayed_job stop

echo "moving to master branch..."
git checkout master
echo "resetting to master to remote and discarding any local changes..."
git reset --hard origin/master
echo "pulling new code..."
git pull origin master

echo "precompilign assets..."
bundle exec rake assets:precompile

echo "performing database migration..."
rake db:migrate RAILS_ENV=production
rake db:seed RAILS_ENV=production

# restarting all the things...
echo "starting puma..."
pumascript start
echo "starting delayedjob..."
bin/delayed_job start