Ubuntu 16.04 (64 bit), rails 4.1.4 (deemed to be appropriate, given that the rails version used in the sample Openshift rails project [3] is 4.1.4.

1. Create the Github repository
   
2. Clone the repository locally
   

git clone [Github clone url]

1. Enter the root directory or the repository
   

cd [Repository name]

1. Create a new rails project in the repository, poviding a name for the project
   

rails _4.1.4_ new [Project name] --database=postgresql

1. Move the contents of the root directory of the newly created rails project to the root directory of the repository, then remove the root directory of the rails project
   

mv [Project name]/* .
rm -rf [Project name]

1. Create an Openshift 'Rails 4' application
   
2. In the locally cloned Github repository, add the Openshift repository as a remote repository
   

git remote add openshift -f [Openshift clone url]

1. Remove files which cause subsequent merge complications
   

rm config/secrets.yml
rm -rf log/.keep

1. Merge the contents of the Openshift repository into the Github repository
   

git merge openshift/master -s recursive -X ours

1. Replace the contents of the config/database.yml file with those found in the same file within the repository of the Openshift sample Rails 4 application [3], afterwards (at time of writing) the contents of the file should appear as follows
   

sqlite: &sqlite
adapter: sqlite3
database: db/<%= Rails.env %>.sqlite3

mysql: &mysql
adapter: mysql2
database: "<%=ENV['OPENSHIFT_APP_NAME']%>"
username: "<%=ENV['OPENSHIFT_MYSQL_DB_USERNAME']%>"
password: "<%=ENV['OPENSHIFT_MYSQL_DB_PASSWORD']%>"
host: <%=ENV['OPENSHIFT_MYSQL_DB_HOST']%>
port: <%=ENV['OPENSHIFT_MYSQL_DB_PORT']%>

postgresql: &postgresql
adapter: postgresql
database: <%=ENV['OPENSHIFT_APP_NAME']%>
username: <%=ENV['OPENSHIFT_POSTGRESQL_DB_USERNAME']%>
password: <%=ENV['OPENSHIFT_POSTGRESQL_DB_PASSWORD']%>
host: <%=ENV['OPENSHIFT_POSTGRESQL_DB_HOST']%>
port: <%=ENV['OPENSHIFT_POSTGRESQL_DB_PORT']%>
min_messages: ERROR
reconnect: false

defaults: &defaults
pool: 5
timeout: 5000
encoding: utf8
<<: *<%= ENV['RAILS_DB'] || "sqlite" %>

development:
<<: *defaults

test: &test
<<: *defaults

production:
<<: *defaults

1. Publish application to Openshift by pushing the changes to the remote repository
   

git push openshift HEAD

A copy of the resulting source can be found [here](https://github.com/adlawren/Openshift-Rails-App-Test).

[1] https://docs.openshift.org/latest/dev_guide/app_tutorials/ruby_on_rails.html, "Ruby on Rails", 2016. [Accessed: 4-Sep-2016].
[2] http://stackoverflow.com/questions/12657168/can-i-use-my-existing-git-repo-with-openshift/12669112#12669112, "Can I use my existing git repo with openshift", 2016. [Accessed: 4-Sep-2016].
[3] https://github.com/openshift/rails4-example, "rails4-example", 2016. [Accessed: 4-Sep-2016].
[4] http://stackoverflow.com/questions/379141/specifying-rails-version-to-use-when-creating-a-new-application#452458, "Specifying rails version to use when creating a new application", 2016. [Accessed: 4-Sep-2016].