Install rbenv and ruby from /opt/rbenv.tar.gz or vendor/rbenv/

[bshand]

This PR moves the app:install_ruby task currently in era/config/deploy.rb to ndr_dev_support:install_ruby, so all projects using ndr_dev_support get the same functionality: it will automatically install rbenv and the packaged ruby version using /opt/rbenv.tar.gz. (This is only useful for first-time ruby installation, not version updates.)

It also checks in vendor/rbenv/ and can install rbenv and ruby versions from there (first-time installations and updates).

For usage, run $ cap -e ndr_dev_support:install_ruby:

------------------------------------------------------------
cap ndr_dev_support:install_ruby
------------------------------------------------------------
Ensure that the required ruby version is installed.

This can be installed from /opt/rbenv.tar.gz (first installation only) or vendor/rbenv/

To place an offline copy of rbenv in /opt/rbenv.tar.gz
For ruby 3.1.6, run the following commands:
$ mkdir clone_rbenv
$ git clone https://github.com/rbenv/rbenv.git clone_rbenv/.rbenv
$ git clone https://github.com/rbenv/ruby-build.git clone_rbenv/.rbenv/plugins/ruby-build
$ mkdir clone_rbenv/.rbenv/cache
$ (cd clone_rbenv/.rbenv/cache; curl -O https://cache.ruby-lang.org/pub/ruby/3.1/ruby-3.1.6.tar.gz)
$ (cd clone_rbenv; rm -f ../rbenv.tar.gz; tar czf ../rbenv.tar.gz .rbenv)
$ rm -rf clone_rbenv
$ scp -p rbenv.tar.gz app-server:/opt/rbenv.tar.gz

To add rbenv, ruby-build and additional ruby versions to the application vendor directory
For ruby 3.2.6:
$ mkdir clone_rbenv
$ git clone https://github.com/rbenv/rbenv.git clone_rbenv/.rbenv
$ mkdir -p vendor/rbenv; rm -f vendor/rbenv/rbenv.tar.gz
$ tar czf vendor/rbenv/rbenv.tar.gz -C clone_rbenv .rbenv
$ rm -rf clone_rbenv
$ mkdir clone_ruby-build
$ git clone https://github.com/rbenv/ruby-build.git clone_ruby-build/ruby-build
$ mkdir -p vendor/rbenv/cache; rm -f vendor/rbenv/ruby-build.tar.gz
$ tar czf vendor/rbenv/ruby-build.tar.gz -C clone_ruby-build ruby-build
$ rm -rf clone_ruby-build
$ (cd vendor/rbenv/cache; curl -O https://cache.ruby-lang.org/pub/ruby/3.2/ruby-3.2.6.tar.gz)
$ git add vendor/rbenv/{rbenv,ruby-build}.tar.gz vendor/rbenv/cache/*

[kenny-lee-1]

Looks good to me. I'll be using it in HES 😄