Merge pull request #407 from bytemain/master

Update README about build image

Author: lucaslorentz

README.md

@@ -567,11 +567,11 @@ If you need additional Caddy plugins, or need to use a specific version of Caddy
 The main difference from the instructions on the official image is that you must override `CMD` to have the container run using the `caddy docker-proxy` command provided by this plugin.
 
 ```Dockerfile
-ARG CADDY_VERSION=2.5.0
+ARG CADDY_VERSION=2.6.1
 FROM caddy:${CADDY_VERSION}-builder AS builder
 
 RUN xcaddy build \
-    --with github.com/lucaslorentz/caddy-docker-proxy/plugin \
+    --with github.com/lucaslorentz/caddy-docker-proxy/v2 \
     --with <additional-plugins>
 
 FROM caddy:${CADDY_VERSION}-alpine