Since Github runners now have yamllint installed by default see actions/runner-images#1657, thanks @yvele 🙏, the action is now a Composite action and not a Docker action which speeds up the run significantly because the dockerfile doesn't need building before running yamllint.
If you need to use Docker action, continue using ibiqlik/action-yamllint@v2, there is no difference in functionality.
Happy linting ✅