Configuration variables

[mr-infinity]

It would be great to have extra environment variables for NGINX, PHP.
This is not only to see which ports are used, but also to use multiple docker instances or clusters.

Extra variables for NGINX:

• Nginx port variable 80
• PHP listener variable 127.0.0.1:9000 or unix:/var/run/php5-fpm.sock;
• Access log variable on/off
• Error log variable on/off

Extra variables for PHP-FPM:

• XDebug remote port variable 9001
• XDebug profiler enable variable On/Off
• Error log variable on/off
• Slowlog variable on/off
• Expose php variable on/off
• Fastcgi.logging variable 0/1