Install RVM in /root directory

instructions.txt

Please note that if you want to install for root only, using a per-user install, then you must prepopulate root's $HOME/.rvmrc with the following BEFORE you attempt to install:

echo 'export rvm_prefix="$HOME"' > /root/.rvmrc
echo 'export rvm_path="$HOME/.rvm"' >> /root/.rvmrc

This overrides the checking done that assumes that if root is executing the install it must be a Multi-User installation type, and that RVM must go into /usr/local/rvm. This also negates the need to use sudo, as the combination of all these factors effectively turns it into a Per-User installation type specifically for the root user only. Please note that this is not a typical, or generally supported installation type.

Install RVM
curl -L https://get.rvm.io | sudo bash -s stable

Restart RVM
source /etc/profile.d/rvm.sh

Test RVM
rvm requirements

Install Dependencies
apt-get install build-essential openssl libreadline6 libreadline6-dev curl git-core zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt-dev autoconf libc6-dev ncurses-dev automake libtool bison subversion

Install Ruby
rvm install 1.9.2 && rvm use 1.9.2 --default

Install Rails
gem install rails --no-rdoc --no-ri