Container support help

I am following the example from https://www.serverless.com/blog/container-support-for-lambda/ and I have a question.

My original lambda handler has 2 functions within the handler.js. In the original serverless.yml without docker image, I have:

functions:
  func1:
    handler: handler.func1
    events:
      ...
  func2:
    handler: handler.func2
    events:
      ...

The new serverless.yml, I am changing it to:

functions:
  func1:
    image: <account>.dkr.ecr.<region>.amazonaws.com/<repository>@<digest>
    events:
      ...
  func2:
    image: <account>.dkr.ecr.<region>.amazonaws.com/<repository>@<digest>
    events:
      ...

My question is, what do I put into the CMD in the Dockerfile so I can access both func1 and func2?

Currently I have:

FROM public.ecr.aws/lambda/nodejs:14
ARG FUNCTION_DIR="/var/task"

# Create function directory
RUN mkdir -p ${FUNCTION_DIR}

# Copy handler function and package.json
COPY handler.js ${FUNCTION_DIR}
COPY package.json ${FUNCTION_DIR}

# Install NPM dependencies for function
RUN npm install

# Set the CMD to your handler
CMD [ "handler" ]