Doubled existing fastcgi buffer size and updated to latest docker-base v11 (security updates)

Further changes to fastcgi buffer config

Same as V12 but with syntax bug in Dockerfile fixed

Updated to latest docker-base and adds larger fastcgi buffers configs.

Updating to nginx version 1.10.1

Nginx mitigation for httpoxy vulnerability

Migrating fez specific configs to docker-nginx-fez and using this as a FROM base instead

If this feels like opening up the nginx conf too much just for espace/fez we can make a docker-nginx-fez later. Especially if there are any/much more of these nginx.conf changes.

Updating docker-base image

Updating to docker-base:5 (which contains latest glibc updates)