Update README.rst

Author: gilesknap

README.rst

@@ -33,9 +33,8 @@ If you are interested in discussing containers for control systems, please:
 - Add a brief description of your project and the status of it's use of containers to:
 
   - https://github.com/epics-containers/epics-containers.github.io/wiki/Brief-Overview-of-Projects-Using-Containers-in-Controls
-- Email [email protected] to introduce yourself
+- Join in the discussion at https://github.com/epics-containers/epics-containers.github.io/discussions
 
-We will set up a communication channel soon (after ICALEPCS 2021).
 
 Materials
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