Install curl as a dependency of the rvm installer:
aptitude install curl
Installing rvm as a multi-user install. This is so that everybody can use the gemsets, however we can also run the rails app as a non root user:
sudo bash < <(curl -sk https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer )
sudo aptitude install git-core
sudo usermod -a -G rvm user
Found by typing rvm requirements
sudo aptitude install \
build-essential openssl libreadline6 libreadline6-dev curl \
git-core zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-0 \
libsqlite3-dev sqlite3 libxml2-dev libxslt-dev autoconf \
libc6-dev ncurses-dev automake libtool bison subversion
rvm install 1.9.3
rvm use 1.9.3 --default
gem update --system