updated to add xdebug container option for development, and update to PHP 7.2 elsewhere

cron/Dockerfile

-FROM oeru/php7.0-fpm-jessie
+FROM oeru/php72-fpm
 MAINTAINER Dave Lane <dave@oerfoundation.org> (@lightweight)
 
 # note: cron is already installed.

nginx/conf.d/default.conf

-# Caching configuration
-# https://easyengine.io/wordpress-nginx/tutorials/multisite/subdirectories/fastcgi-cache-with-purging/
-#
-fastcgi_cache_path /var/cache/nginx levels=1:2 keys_zone=WORDPRESS:500m inactive=60m;
-fastcgi_cache_key "$scheme$request_method$host$request_uri";
-fastcgi_cache_use_stale error timeout invalid_header http_500;
-
-# from https://www.nginx.com/resources/wiki/start/topics/recipes/wordpress/
-#
-# using subdir approach, not subdomain...
-map $uri $blogname{
-	~^(?P<blogpath>/[^/]+/)files/(.*)  $blogpath ;
-}
-
-map $blogname $blogid{
-	default -999;
-	#Ref: http://wordpress.org/extend/plugins/nginx-helper/
-	include /var/www/html/wp-content/uploads/nginx-helper/map.conf;
-}
-
-# statements for each of your virtual hosts to this file
-server {
-	listen 0.0.0.0:80;
-    root /var/www/html;
-	index index.php index.html index.htm;
-
-    #
-    # Caching configuration
-    #
-    #fastcgi_cache start
-    set $skip_cache 0;
-
-    # POST requests and urls with a query string should always go to PHP
-	if ($request_method = POST) { set $skip_cache 1; }
-	if ($query_string != "") { set $skip_cache 1; }
-
-    # Don't cache uris containing the following segments
-	if ($request_uri ~* "(/wp-admin/|/xmlrpc.php|/wp-(app|cron|login|register|mail).php|wp-.*.php|/feed/|index.php|wp-comments-popup.php|wp-links-opml.php|wp-locations.php|sitemap(_index)?.xml|[a-z0-9_-]+-sitemap([0-9]+)?.xml)") {
-		set $skip_cache 1;
-	}
-	# Don't use the cache for logged in users or recent commenters
-	if ($http_cookie ~* "comment_author|wordpress_[a-f0-9]+|wp-postpass|wordpress_no_cache|wordpress_logged_in") {
-		set $skip_cache 1;