Build instructions do not make it clear whether they apply only to Ubuntu (or Debian) Linux derivatives or not

In https://github.com/ytsaurus/ytsaurus/blob/main/BUILD.md it is mentioned that `We have tested YTsaurus builds using Ubuntu 18.04 and 20.04.` but later it is not mentioned in `How to Build` section whether the provided instructions apply only to installation on Ubuntu or any Linux x86_64 distribution in general. [Here](https://github.com/ytsaurus/ytsaurus/blob/9e5799e874408f01ce49e875b844f0696e13afa7/BUILD.md?plain=1#L26) it says `GNU/Linux` but the following instructions are Debian-specific.
And later Debian-specific [`apt-get` command is mentioned again](https://github.com/ytsaurus/ytsaurus/blob/9e5799e874408f01ce49e875b844f0696e13afa7/BUILD.md?plain=1#L57).