You may also want to check out js-like arrow function.
https://nim-lang.org/docs/sugar.html#%3D%3E.m%2Cuntyped%2Cuntyped
I don't think so: https://hub.docker.com/_/ubuntu?tab=tags
They do have devel tag (I'm using that BTW) but it means that this is the development version of Ubuntu, i.e. eoan, not that it contains some packages for developers. So, I have to install GCC and wget manually: https://github.com/moigagoo/nimage/blob/develop/flavors/slim.nim#L8