This repository contains a Dockerfile to for running Wordpress against an external database. For example, you can use Amazon RDS for a high-availability backing store instead of trying to manage your own data.
Currently this requires a WordPress config to be mounted into /var/www/html, but hopefully that restriction can be lifted to enable new installs easily.
For more detail on how this works, visit blog.mcskinner.com.
Base Docker Image
docker run -d -p 80:80 \ -v $(pwd)/config/wp-config.php:/var/www/html/wp-config.php \ mcskinner/wordpress