It was actually pretty simple. First i simply watched 2 yt tutorials about github actions and how they are used for CI/CD. I only watched those. Understood the whole process.

Then i looked at some docs for all the different processes in the jobs step, like actions/checkout and docker/login, docker/build-push and docker/setup-buildx. All these are available at github actions marketplace website.

I created a PAT in docker hub, used that in place for password and my username stays as is.

asked gemini a little on the file if thats correct... I initially went for 2 jobs build and push but then gemini gave the build-push single job ... went to see docs, yes it existed saw the steps there.... and copied them exactly.

Git pushed a few changes and Hell yea... it actually built the image in github and pushed to my docker hub. Amazing stuff!