Tik lets you specify, in this image, have exactly this version of python compiled in this way. You can then go further rustling like docer compose, where compose lets you start up a little network of containers. And then it's very easy to say, ok, i want to spin up postscripts where i want tospin up retis howwers,. traditionally, this would be a pain in the s will docer and docor compose. So then even if you're not using docker for your own code, you can use dockor for the services you depend on.