Some things I installed to get a nodejs app server running on a2Hosting's CloudVM (ubuntu)

a2VHost install.sh

sudo apt-get install git;
sudo apt-get install python g++ make;
sudo apt-get install python-software-properties;
sudo apt-get install g++ curl libssl-dev apache2-utils;

sudo apt-get update;

sudo add-apt-repository ppa:chris-lea/node.js;
sudo apt-get update;
sudo apt-get install nodejs;

# Sources
#
# https://help.ubuntu.com/community/Repositories/CommandLine#Adding_Launchpad_PPA_Repositories
# https://github.com/joyent/node/wiki/Installing-Node.js-via-package-manager#ubuntu
#
# I didn't really do this, but it's helpful: http://oodavid.tumblr.com/post/15090798307/how-to-install-node-js-on-linux