Prerequisites

GNU Make.

For Linux, use your distro specific instructions
For Windows, see https://stackoverflow.com/questions/32127524/how-to-install-and-use-make-in-windows
- Actually (at 2020-03-01) GNUWin32 is very outdated (2006), I advise you to use Chocolaty (it has built GNU Make from recent sources, as we can see in their "Package Source")
For mac users, it is installed by default

Disclaimer:
- On Windows or Mac, installation of Docker could be complicated.
- Use more disc space. It's not a fake affirmation. I've taken fill my free 50Go of disk space simply when I've tested several times to adapt the configuration of the current ./Dockerfile (you could run docker system prune).
- Takes more resources
- Build the website is incredibly more long especially if you want simply update node_modules when package.json is changed. With the method without docker, the upgrade with simply yarn install is very quick.
But if you won't install node and yarn in your environment because you hate this web tools, and if you have already Docker, it could be a solution interesting.
During the build, some files are created ( ./site/data/webpack.json , ./site/resources/_gen/ ). There owner are root. Could cause some problems when you use commands as not root user (rm, git, yarn). You must delete this file before with sudo. It's not cool.
- Note: with the add of a dockerignore file, this issue should be solved.