Issue #119: Use Ruby 2.3.8 for now, as it works well with sass gem in demo app.

Author: geerlingguy

deployments/playbooks/provision.yml

@@ -13,10 +13,11 @@
 
   tasks:
     - name: Install app dependencies.
-      apt: "name={{ item }} state=present"
-      with_items:
-        - libsqlite3-dev
-        - libreadline-dev
+      apt:
+        name:
+          - libsqlite3-dev
+          - libreadline-dev
+        state: present
 
     - name: Ensure app directory exists and is writeable.
       file:

deployments/playbooks/vars.yml

@@ -18,8 +18,8 @@ passenger_ruby: /usr/local/bin/ruby
 
 # Variables for Ruby installation.
 ruby_install_from_source: true
-ruby_download_url: https://cache.ruby-lang.org/pub/ruby/2.6/ruby-2.6.0.tar.gz
-ruby_version: 2.6.0
+ruby_download_url: https://cache.ruby-lang.org/pub/ruby/2.3/ruby-2.3.8.tar.gz
+ruby_version: 2.3.8
 
 # Variables for Node.js installation.
 nodejs_install_npm_user: root