Need a way to remove Docker commands

[scott-doyland-burrows]

If I have setup a Docker command to be passed to the conatainer, eg:

    - name: Render ECS task definition
      uses: aws-actions/amazon-ecs-render-task-definition@v1
      with:
        task-definition: xxx
        container-name:xxx
        image: xxx
        command: "echo, hello"

but then later want to remove the command completely, so in my task def it will show as an empty array [], then it seems I cannot do that. Passing a null value to command: still keeps the old command from the previous run.