Install Ruby 2.3 on Ubuntu 19.10 using asdf (ruby-build)

ruby-2-3-install.sh

#!/bin/bash

# It assumes [asdf](https://github.com/asdf-vm/asdf) to be installed
# and asdf plugin for Ruby to be added

set -exuo pipefail

sudo apt install libreadline-dev
wget https://www.openssl.org/source/old/1.0.2/openssl-1.0.2u.tar.gz
tar -xzf openssl-1.0.2u.tar.gz
cd openssl-1.0.2u
./config --prefix=/opt/openssl-1.0.2u --shared
make
make test
sudo make install
RUBY_BUILD_CACHE_PATH=$HOME/.ruby-build-cache \
RUBY_CONFIGURE_OPTS=--with-openssl-dir=/opt/openssl-1.0.2u \
PKG_CONFIG_PATH=/opt/openssl-1.0.2u/lib/pkgconfig \
  asdf install ruby 2.3.8