General todo

[AaronMcHale]

• [In progress] Documentation of docker directory and each image
• Docker Bench Security related hardening Issue Docker Bench Security hardening #1
• More Nginx hardening and configuration
• Initial TLS support Issue Initial TLS support #3
• Review PHP configuration and any hardening
• MariaDB hardening
• Update test script/images with latest additions
• License file? (probably)
• Mailhog (for development)
• Need a wrapper for running PHPUnit, similar to what we do with Composer