This script installs a node.js app in Ubuntu 16.04 machine. It based of fabric library of python.

fabfile.py

from fabric.api import *
from fabric.operations import *
from fabric.contrib.project import rsync_project
from fabric.contrib.files import exists

import sys, os

abspath = lambda filename: os.path.join(
    os.path.abspath(os.path.dirname(__file__)),
    filename
)

# --------------------------------------------
# DEV platform cofiguration
# --------------------------------------------

class FabricException(Exception):
    pass

def dev():
    print "Connecting to Ec2 machine"

    env.setup = True
    env.user = 'ubuntu'
    env.ubuntu_version = '16.04'
    env.warn_only = True
    env.development_env = 'dev'
    env.password = 'ubuntu'
    env.key_filename = abspath('keyfile.pem')
    env.hosts = [
        'A.B.C.D'
    ]
    #env.app_port = '3000'

    env.home = '/home/%s' %(env.user)
    env.project = 'finwallet-client'
    env.app_path = '%s/%s' %(env.home, env.project)

    env.graceful = False

    env.nginx_config = abspath('../nginx.conf')

    env.rsync_exclude = [
       "fonts/",
       "javascripts/",
       "stylesheets/",
       "*.py",
       "*.pyc",
       "sample.index.html",
       "*.pem"
   ]
    return


# --------------------------------------------
# Installing Dev Platform
# --------------------------------------------

def install():
    print 'Start installing Dev Platform'
    update()
    install_nginx()
    nginx_config()
    print 'Finished installing Dev Platform'
    return

def update():
    print 'Start updating the system'
    sudo('apt-get update')
    return

def install_nginx():
    print 'Installing NGINX'
    sudo("apt-get install -y nginx")
    return

def nginx_config():
    print 'Configuring NGINX'
    default_config='/etc/nginx/sites-enabled/nginx.conf'
    if exists(default_config):
        sudo('rm /etc/nginx/sites-enabled/nginx.conf')
        print 'Deleted NGINX default config'

    print 'Install NGINX config'
    put('%s' % (env.nginx_config), '/etc/nginx/sites-enabled/', use_sudo=True)

    print 'Restarting NGINX'
    sudo("service nginx stop")
    sudo("service nginx restart")
    return

def build_client_app():
    print 'Building Client App...'
    local('cd ..; export NODE_ENV="production"; npm install; npm run build')
    return

def sync_code_base():
    print 'Syncing codebase'
    local('cp sample.index.html index.html')
    rsync_project(env.app_path, abspath('') + '*', exclude=env.rsync_exclude, delete=True, default_opts='-rvz')
    local('rm index.html')
    return


# --------------------------------------------
# Deploying DEV Platform
# --------------------------------------------

def deploy():
    print 'Start deploying .....'
    build_client_app()
    sync_code_base()
    print 'Successfully finished deployment'
# --------------------------------------------
# fabric script end
# --------------------------------------------