Ah yes, that was one of the main selling points of docker early on, fixing the "works on my machine". The way I solve that problem is by working directly on te

Ah yes, that was one of the main selling points of docker early on, fixing the "works on my machine". The way I solve that problem is by working directly on testing/staging servers which have the same specs as production. I almost never run stuff on my local machine, and if I do it's a well isolated piece of code whose IO signature I know exactly and I can mock external systems with ease.