Allow docker images to be built from source on a specific branch

[jorgeantonio21]

If we want to have end to end PRs, we should test the logic in new branches. For this reasons, we should be able to pass in as an argument the branch name, and the test environment should be able to build (and push images) from source to test it.

[maschad]

Correct, the longterm plan here is to create a Github Action that can be used by other repos in the Atoma Org which will allow devs to use this infra without having to necessarily interface with the logic of this repo.