Refactoring files to templates and use of Alpine as base images for NGINX and PHP containers.

✨ ♻️ Reorganization of files to work using templates watched by nginx's image envsubst function. It offers the capabilitie of work with environment values in these files;
PHP and NGINX has its base images changed to Alpine instead of Ubuntu to preserve an small length;
A part of our files and scripts was been removed due to its deprecation when the base images are already configured in a lot of parts. I'm preserving mine configuration files that implement cache, security and other things, changed it to templates.