Cache for proxy vía extprocessor + context

I am using docker and a proxy extprocessor plus context to proxy pass the calls to several domains, and work great, its something like this:

extprocessor dockerserver {
  type                    proxy
  maxConns                2000
  pcKeepAliveTimeout      60
  initTimeout             60
  retryTimeout            0
  respBuffer              0

context / {
  type                    proxy
  handler                 dockerserver
  addDefaultCharset       off

I repeat, it works like a charm, but want to use the openlitespeed cache in order to improve response time and lower the server work, may be you can please guide me on that process.

Thanks in advance