Fix forward_auth in caddy, keep proxy open when run locally

config/Caddyfile

@@ -6,7 +6,7 @@
 
 http://*:8888 {
 	forward_auth /admin/* http://127.0.0.1:3000 {
-		uri http://127.0.0.1:3000
+		uri /auth
 		copy_headers {
 			Authorization
 		}

src/daemon/config.cr

@@ -20,6 +20,13 @@ class Config
 end
 
 class ConfigAuthHandler < Kemal::BasicAuth::Handler
+  only ["/auth"]
+
+  def call(context)
+    return call_next(context) unless only_match?(context)
+    super
+  end
+
   def initialize
     # Ignored, just make the compiler happy
     @credentials = Kemal::BasicAuth::Credentials.new({"foo" => "bar"})

src/daemon/main.cr

@@ -23,6 +23,9 @@ get "/version" do
   "#{version}"
 end
 
+get "/auth" do
+end
+
 get "/reload" do
   Log.info { "Reloading configuration" }
   Config.load

src/daemon/proxy.cr

@@ -37,7 +37,7 @@ module Proxy
 
 http://*:8888 {
 	forward_auth /admin/* http://127.0.0.1:3000 {
-		uri http://127.0.0.1:3000
+		uri /auth
 		copy_headers {
 			Authorization
 		}