diff --git a/caddy/readme.md b/caddy/readme.md
index 269a891..b2c8bb2 100644
--- a/caddy/readme.md
+++ b/caddy/readme.md
@@ -1,3 +1,10 @@
-Caddy
+# Caddy
 
-needs plugins
\ No newline at end of file
+builds docker image with github.com/caddy-dns/duckdns 
+
+## local
+
+1. use `certs.sh` to get tar of data
+1. extract `caddy-data.tar\.\caddy\pki\authorities\local\root.crt`
+1. right click, install
+1. select "trusted root certification authorities"