Get SOGo web resources from SOGo httpd, enable caching

data/conf/nginx/site.conf

@@ -1,3 +1,4 @@
+proxy_cache_path /tmp levels=1:2 keys_zone=sogo:10m inactive=24h  max_size=1g;
 server {
   include /etc/nginx/conf.d/listen.active;
   ssl on;
@@ -101,16 +102,32 @@ server {
   }
 
   location /SOGo.woa/WebServerResources/ {
-    alias /usr/lib/GNUstep/SOGo/WebServerResources/;
+    proxy_pass http://sogo:9192/WebServerResources/;
+    proxy_set_header Host $host;
+    proxy_cache sogo;
+    proxy_cache_valid 200 1d;
+    proxy_cache_use_stale error timeout invalid_header updating http_500 http_502 http_503 http_504;
+    #alias /usr/lib/GNUstep/SOGo/WebServerResources/;
     allow all;
   }
 
   location /SOGo/WebServerResources/ {
-    alias /usr/lib/GNUstep/SOGo/WebServerResources/;
+    proxy_pass http://sogo:9192/WebServerResources/;
+    proxy_set_header Host $host;
+    proxy_cache sogo;
+    proxy_cache_valid 200 1d;
+    proxy_cache_use_stale error timeout invalid_header updating http_500 http_502 http_503 http_504;
+    #alias /usr/lib/GNUstep/SOGo/WebServerResources/;
     allow all;
   }
 
   location (^/SOGo/so/ControlPanel/Products/[^/]*UI/Resources/.*\.(jpg|png|gif|css|js)$ {
-    alias /usr/lib/GNUstep/SOGo/$1.SOGo/Resources/$2;
+    proxy_pass http://sogo:9192/$1.SOGo/Resources/$2;
+    proxy_set_header Host $host;
+    proxy_cache sogo;
+    proxy_cache_valid 200 1d;
+    proxy_cache_use_stale error timeout invalid_header updating http_500 http_502 http_503 http_504;
+    #alias /usr/lib/GNUstep/SOGo/$1.SOGo/Resources/$2;
   }
+
 }