build docker container on the fly

[AtomicFS]

This would be a great feature and I have opened a issue about it for a while now #163.

However thinking about this I have realized that because we are using docker-compose file-format for parametrize out containers, we would have to implement the same functionality again.

This brings me to the core of the discussion - it might be a good idea to scrap the Python code responsible for building the Docker containers and absorb all of the functionality into the Golang code.

The benefits are:

• it is a really good feature to have
• potentially less code to maintain
• one whole programming language less in repo
• one tool less (daggerci would be absorbed into firmware-action)
• a lot of litter files would be removed from the repository such are .pylintrc, requirements.txt, and so on
• simpler CI

Drawbacks are:

• a lot of work with re-writing