Create an account at http://openshift.redhat.com/
Create a PHP 5 application + a PostgreSQL 8 cartridge to the app, and import all the quickstart codes:
rhc app create ttrss php-5.4 postgresql-9.2 cron-1.4 --from-code=https://github.com/mcgin/tiny_tiny_rss-openshift-quickstart.git --timeout=9999
You can now checkout your RSS application at:
http://<app name>-<your namespace>.rhcloud.com
This app can be shared by multiple users. The default user credential is "admin"/"password".
rhc git-clone ttrss
Once you have a repository (manually or automatically) you will probably want to add repository as 'upstream':
$ cd ttrss
$ git remote add upstream -m master https://github.com/mcgin/tiny_tiny_rss-openshift-quickstart.git
TTRSS is now installed!
To update, just run a pull from repo and push into the Openshift instance:
$ git pull upstream master
$ git push
This will pull in any changes such as new release versions of TTRSS. It should not affect your existing data. It does take some time though, as Openshift goes through a complete application restart.