* Change default output format to parsable
`github` format is barely usable in the logs where it only shows that errors/warnings occurred but not which file:line.
* Update README.md
Add wf to autotag minor and patch releases
By default use Dockerfile rather than docker image,
obviously is slower by ~15 sec which consumes precious
runner minutes but harder to automate releases, tagging and
updating image reference in action.yaml
thou not impossible. Next time.
Use the current directory as default path for yamllint.
It's a handy default option which allows yamllint to check all yaml
files in repository by default (which is usually the use case).
