Create Github Container Package to publish Docker image

[aldy505]

Documentation: https://docs.github.com/en/packages/working-with-a-github-packages-registry/working-with-the-container-registry

And implement on Github Actions: https://docs.github.com/en/actions/creating-actions/creating-a-docker-container-action

Why? Easier for people to run the app rather than cloning the repo, pull go image from there, build the docker image, store every trash on their machine.