Need help url rewrite

Traefik Traefik v2 (latest)
1

Hi All,

Looking for a little help on rewriting a URL that is an Intersystems cache app. Basically, I have a subdomain dash.domian.com and a backend URL of server.internal.domain.com:57772/csp/obj/CPOCDashboard.csp.

[http.routers]
  [http.routers.poc_dash-rtr]
      entryPoints = ["https"]
      rule = "Host(`dash.domain.com`)"
      service = "poc_dash-svc"
      middlewares = ["chain-basic-auth"]
      [http.routers.poc_dash-rtr.tls]
        certresolver = "lets-encrypt"
[http.services]
  [http.services.poc_dash-svc]
    [http.services.poc_dash-svc.loadBalancer]
      passHostHeader = true
      [[http.services.poc_dash-svc.loadBalancer.servers]]
        url = "http://192.168.70.16:57772/csp/obj/CPOCDashboard.csp"

I'm very new to using Traefik as a reverse proxy and let alone a reverse proxy, all help and guidance are greatly appreciated. Thanks