Allow requests to /internal in dev container setup and forward metrics request to seperate webserver

Author: svkrieger

.devcontainer/images/nginx/conf/nginx.conf

@@ -42,6 +42,10 @@ http {
                 server host.docker.internal:3000;
         }
 
+        upstream cloud_controller_metrics {
+                server host.docker.internal:9395;
+        }
+
         map $upload_tmp_path $upload_tmp_path_modified {
           default                    "n/a";
           "~^/tmp/(?<path>.*)$"  $path;

.devcontainer/images/nginx/conf/nginx_external_endpoints.conf

@@ -2,8 +2,8 @@ server {
   listen 80;
 
   # Forbid access to internal endpoints
-  location /internal/v4/ {
-    return 403 'Forbidden';
+  location /internal/v4/metrics {
+    proxy_pass                   http://cloud_controller_metrics;
   }
 
   # proxy and log all CC traffic