docker pointers

README.md

@@ -19,6 +19,11 @@ Documentation
 - Documentation, including installation, FAQ etc.are [here for the latest stable release](https://zmeventnotification.readthedocs.io/en/stable/) and [here for the master branch](https://zmeventnotification.readthedocs.io/en/latest/)
 - Always refer to the [Breaking Changes](https://zmeventnotification.readthedocs.io/en/latest/guides/breaking.html) document before you upgrade.
 
+3rd party dockers 
+------------------
+I don't maintain docker images, so please don't ask me any questions about docker environments. There are others who maintain docker images. 
+Please see [this link](https://zmeventnotification.readthedocs.io/en/latest/guides/install.html#rd-party-dockers)
+
 Requirements
 -------------
 - Python 3.6 or above