@mangesh Heya! I guess you have seen this video https://youtu.be/CKn4ZBh9PpY which is perfect in all ways, and if you had used every steps as shown in video, then the cause of error is different.
@mangesh As, I suggested you in previous thread How to solve rasa.utils.endpoints.ClientResponseError? , Just sort your docker-compose file and you are good to go again.
@mangesh I would encourage, try run the code first on local machine (if code is complex) and then on docker. Even you have to manage all the requirement files for action.py
Happy to help you 
Have a great coding. If any doubt 
we are here. Good Luck! Buddy!