What use case are you addressing here? Docker can be used to maintain development tools in various ways, but I see it as mostly operating on a different level f

What use case are you addressing here? Docker can be used to maintain development tools in various ways, but I see it as mostly operating on a different level from asdf. For example, asdf can install tools on a developer's system. asdf can route invocations to the appropriate version of an installed tool. Docker can be used to install tools in isolation by way of an image build. That image can be shipped off, so that developers can pull the image, and do not have to run an installation procedure. Docker can pull and run the appropriate version on demand upon invocation. It's also not a binary choice. You can use asdf in a Docker container, and you could use Docker in an asdf plugin.