The problem that docker solve for me is reinstalling. Some software, like RDBMS, are heavy to setup. You can do once and is not that hard, but then when the da

The problem that docker solve for me is reinstalling. Some software, like RDBMS, are heavy to setup. You can do once and is not that hard, but then when the day come to reinstall, upgrade or move it to another version: - You need to remember how do that - If you upgrade OS, the step have changed - If the install (of the OS) go kaput, you can lose the work of setup everything so far -the steps- (ie: I have a few times manage to ruin some ubuntu install. Instead of wasting time fixing it, I spin another server and redo) - If the install (of the app) go kaput, you are left with a inconsistent state (I manage to broke a PG database in a upgrade, because was looking to the wrong tutorial, Instead of wasting time fixing it, I spin another docker image and redo from backup) - I try to upgrade everything fast. A new ubuntu version? upgrade. A new major PG version? upgrade. Not always to production but I don't like to wake up 2 years late and face a BIG upgrading cycle. prefer to spread the pain in the year. If something wanna break, I want to see it coming. So I reinstall a lot of times. And it work across OS. So all the problems of above, was in my dev machine! P.D: I wanna something alike docker, I don't care for orchestration (so far) only something that allow to package apps/dependencies, work in my small serves, allow to (re)build as fast as possible. What other option can work? (P.D: My main deps are postgress, nginx, redis, python3, .net core, rust (coming). Wish to setup android/ios toolchains too)