Initial add of cups add-on

cups/rootfs/etc/nginx/nginx.conf

@@ -0,0 +1,19 @@
+events {
+}
+
+http {
+
+    server {
+        listen 8099;
+
+        location / {
+            proxy_pass https://localhost:631;
+            proxy_hide_header X-Frame-Options;
+            proxy_hide_header Content-Security-Policy;
+            add_header Content-Security-Policy "sandbox allow-forms allow-modals allow-popups allow-popups-to-escape-sandbox allow-scripts";
+            sub_filter '"/' '"$http_x_ingress_path/';
+            sub_filter "'/" "'$http_x_ingress_path/";
+            sub_filter_once off;
+        }
+    }
+}