Rename MariaDB UTF-8 configuration file.
Add customization of the PHP-FPM pool configuration.
Disable nginx logs.
Use inline DEBIAN_FRONTEND=noninteractive instead of setting an ENV variable.
Update to Ubuntu 14.04 (Trusty)
Simplify Vagrantfile nginx-php5 docker provisioner definition.
For better testing and isolation, split the Vagrant virtual machine definitions.
Update nian/mariadb to Ubuntu 14.04 (Trusty).
Also use inline DEBIAN_FRONTEND=noninteractive for Docker environment variable.