Add docker build github action

[xamfy]

No description provided.

[SaumyaBhushan]

I would like to work on this please assign it to me @xamfy

[xamfy]

Assigned it to you, @ChellappanRajan maybe able to guide you as well, if you have specific questions.

More context on this:
We'll have a new file called Dockerfile in the root directory, you can refer Dockerfile.example, we need exactly same thing but with the ability to replace the container enviroment variables during the build of the image from github secrets(this needs to be figured out).

[xamfy]

@SaumyaBhushan Do let me know if you're facing any issue. You can raise a PR with few changes or a new Dockerfile and we can discuss further over there if there's any doubt or question.

[SaumyaBhushan]

Sure @xamfy