It's just a tool to make downloading binaries for different platforms easier.
## For example
If you want to build a docker image, but you want to make it available on different platforms. But your tool needs other tools as dependencies, e.g. `helm`.
To install helm on Alpine you need to use curl, wget, or something. You need to choose a version, an operating system, and an architecture. For me, it was obvious that you must be able to use `uname -m`...
