Unable to add devcontainer configuration files for 'datascience-python-r'

[chrmarti]

From microsoft/vscode-remote-release#10716

The ghcr.io/microsoft/datascience-py-r/datascience-python-r template seems to contain the entire workspace including the .git folder. I don't see an option on the devcontainers action for publishing the template to exclude or specifically include files. I suggest to move the files that should be part of the template package to a src subfolder and use that as the base-path-to-templates in the action's options.