rasa version changed to 1.10.8 in the dockerfile

Dockerfile

@@ -1,6 +1,6 @@
 FROM ubuntu:18.04
 ENTRYPOINT []
-RUN apt-get update && apt-get install -y python3 python3-pip && python3 -m pip install --no-cache --upgrade pip && pip3 install --no-cache rasa==3.1.2
+RUN apt-get update && apt-get install -y python3 python3-pip && python3 -m pip install --no-cache --upgrade pip && pip3 install --no-cache rasa==1.10.8
 
 ADD . /app/
 RUN chmod +x /app/start_services.sh