Github Actions Build - Push to ECR on Multiple Folders

I have below folder structure in my GitHub repository.

docker
  serverless
    dotnet
      2.1
        Dockerfile
      3.1
        Dockerfile
    python
      3.8
        Dockerfile

Now I have automate the build and push to ECR using github-actions.

Is it possible using github-actions to traverse through each folder and trigger build?

I want if changes are pushed to

• 2.1 Dockerfile the image should always be tagged with 2.1 tag and pushed to ECR

and

• If changes are in 3.1 Dockerfile it should always be tagged with 3.1 and pushed to ECR.

Any ideas on how to achieve this using github-actions?

from Github Actions Build - Push to ECR on Multiple Folders