Issue with working with Caddy

[Attacler]

For the agent i cannot find a way to make sure that the message:
Client sent an HTTP request to an HTTPS server.
Does not turn up anymore, for the portainer "dashboard" i could configure docker to use port 9000 instead of 9001 which disables the check for SSL.
Now im looking for a way to avoid the SSL connection too.
Reason why is because i use Caddy reverse proxy to make sure SSL is enabled: https://caddyserver.com/docs/quick-starts/reverse-proxy

Does someone know a simple way to make sure expose the HTTP port instead of the HTTPS port?

[kuoruan]

reverse_proxy https://portainer-agent:9001 {
  transport http {
    tls_insecure_skip_verify
  }
}