Traefik example

traefik.toml

[entryPoints]
  [entryPoints.web]
    address = ":8888"

[providers]
  [providers.file]
    filename = "traefik_conf.toml"
    watch = true

[log]
  level = "DEBUG"

[accessLog]

[metrics]
  [metrics.prometheus]

[api]
  dashboard = true
  insecure = true

[ping]
  entryPoint = "ping"

traefik_conf.toml

[http]

    [http.routers]
        [http.routers.dash]
            rule = "PathPrefix(`/api`) || PathPrefix(`/dashboard`)"
            service = "api@internal"
        [http.routers.httbin-org]
            rule = "PathPrefix(`/proxy`)"
            middlewares = ["remove-proxy-from-path", "rate-limit-5", "retry-4"]
            service = "httpbin-org"

    [http.middlewares]
        [http.middlewares.remove-proxy-from-path.replacePathRegex]
            regex = "^/proxy/(.*)"
            replacement = "/$1"
        [http.middlewares.rate-limit-5.rateLimit]
            average = 5
        [http.middlewares.retry-4.retry]
            attempts = 4

    [http.services]
        [http.services.httpbin-org.loadBalancer]
            [[http.services.httpbin-org.loadBalancer.servers]]
                url = "http://httpbin.org/"