Fix proxy config in Gitlab Pages nginx examples

lib/support/nginx/gitlab-pages

@@ -18,6 +18,9 @@ server {
     proxy_set_header    X-Real-IP           $remote_addr;
     proxy_set_header    X-Forwarded-For     $proxy_add_x_forwarded_for;
     proxy_set_header    X-Forwarded-Proto   $scheme;
+
+    proxy_cache off;
+
     # The same address as passed to GitLab Pages: `-listen-proxy`
     proxy_pass http://localhost:8090/;
   }

lib/support/nginx/gitlab-pages-ssl

@@ -67,6 +67,9 @@ server {
     proxy_set_header    X-Real-IP           $remote_addr;
     proxy_set_header    X-Forwarded-For     $proxy_add_x_forwarded_for;
     proxy_set_header    X-Forwarded-Proto   $scheme;
+
+    proxy_cache off;
+
     # The same address as passed to GitLab Pages: `-listen-proxy`
     proxy_pass http://localhost:8090/;
   }