Add an explicit caddy timeout

Author: dutow

deploy/Caddyfile.example

@@ -3,7 +3,11 @@
 }
 
 hackorum.example.com {
-  reverse_proxy web:3000
+  reverse_proxy web:3000 {
+    transport http {
+      response_header_timeout 30s
+    }
+  }
   log {
     output stdout
   }