feature: print version on the start of execution and always pull docker image (always update stable)

[pedrocodacy]

did this one on the side while fixing tests in worker

I havent tested it yet, but its ready for review of the approach (actually I tested that the env of the docker contains the version, so further testing should be a quick thing)

[pedrocodacy]

still needs some testing locally

[pedrocodacy]

closing since this is stale, we can consider having these changes later