Yes It works

Proxy-Cache/caching-pod.yaml

@@ -24,7 +24,8 @@ spec:
             - name: tmpfscache
               mountPath: /cache
             - name: nginxconfig
-              mountPath: /etc/nginx
+              mountPath: /etc/nginx/nginx.conf
+              subPath: nginx.conf
               readOnly: true
       volumes:
         - name: tmpfscache

Proxy-Cache/cfgmap.yaml

@@ -4,7 +4,27 @@ metadata:
   name: mirror-proxy-cfg
 data:
   nginx.conf: |
+    user  nginx;
+    worker_processes  auto;
+
+    error_log  /var/log/nginx/error.log notice;
+    pid        /var/run/nginx.pid;
+
+
+    events {
+        worker_connections  1024;
+    }
     http {
+        include       /etc/nginx/mime.types;
+        default_type  application/octet-stream;
+
+        log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
+                          '$status $body_bytes_sent "$http_referer" '
+                          '"$http_user_agent" "$http_x_forwarded_for"';
+
+        access_log  /var/log/nginx/access.log  main;
+
+        sendfile        on;
         # Define caching path and zone
         proxy_cache_path /cache levels=1:2 keys_zone=my_cache:10m max_size=10g inactive=60m;