Rasa base image, exec error?

When I use either FROM rasa/rasa-sdk:2.0.0 and FROM rasa/rasa-sdk:latest as my base image in my docker file for my custom action server, the container fails to run with this error:

docker: Error response from daemon: OCI runtime create failed: container_linux.go:349: starting container process caused “exec: “./entrypoint.sh”: stat ./entrypoint.sh: no such file or directory”: unknown. ERRO[0001] error waiting for container: context canceled

FROM rasa/rasa-sdk:latest

USER root

#Create Directory and copy everything over
RUN mkdir /app
COPY . /app
WORKDIR /app

# Installation of dependencies.
ENV PYTHONPATH=${PYTHONPATH}:${PWD}

RUN pip3 install --upgrade pip
RUN pip3 install --use-feature=2020-resolver gremlinpython boto3 rasa-sdk

# Runtime command
CMD echo "Running container now"

Am I missing something?

I believe this was occurring because actions.py needs to be in a /actions folder.