Help me to deploy WordPress, please

Guys please help me explain how to step through (for example) to deploy wordpress. 3 days already I fight. Nginx launched, BD mariadb launched wordpress can`t can connect to BD mariadb. Thank you who read and double thanks to who can help!

Did you link the containers?

I wrote what happened in this topic:
http://forums.rancher.com/t/working-with-the-rancher-ui/307