diff --git a/README.md b/README.md
index 3502803..6e6ff61 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,29 @@
 [![Go Doc](https://godoc.org/github.com/drone-plugins/drone-docker?status.svg)](http://godoc.org/github.com/drone-plugins/drone-docker)
 [![Go Report](https://goreportcard.com/badge/github.com/drone-plugins/drone-docker)](https://goreportcard.com/report/github.com/drone-plugins/drone-docker)
 
-Drone plugin uses Docker-in-Docker to build and publish Docker images to a container registry. For the usage information and a listing of the available options please take a look at [the docs](http://plugins.drone.io/drone-plugins/drone-docker/).
+Drone plugin uses Docker-in-Docker to build and publish Docker images to a container registry.
+
+** This repository is a fork of drone-plugins/drone-docker with a auto_tag logic changed.
+
+When pushing a tag and using `auto_tag: true`, the logic is below(Not implemented yet):
+
+For git branches:
+
+1) Tagging `main`` branch
+  It will produce the tags: `dev`.
+2) Tagging `release/vxxx` branch
+  It will produce the tags: `1.1x-dev`
+
+For git tags:
+
+1) Tagging a dev version which ends with `-dev`
+  It will produce the tags: <original_tag>
+2) Tagging a pre-release version which ends with `-rcx`, `x` start from 1 to bigger number
+  It will produce the tags: <original_tag>
+3) Tagging a latest stable release, we need to know if the version is the newest
+  It will produce the tags: <original_tag>, `1`,`1.1x`, `latest`
+4) Tagging a low version stable release
+  It will produce the tags:  <original_tag>, `1.1x`
 
 ## Build