Added Determinate Nix Installer to Getting Started.

Added NixOS Tools.

README.md

@@ -121,6 +121,20 @@
   NixOS Software Center
 </p>
 
+[Determinate Nix Installer](https://github.com/DeterminateSystems/nix-installer) is an opinionated alternative to the official [Nix install scripts](https://nixos.org/download.html).
+
+**The nix-installer tool is ready to use in a number of environments:**
+
+|Platform |	Multi User |	root only |	Maturity|
+|------|------|-------|------|
+|Linux (x86_64 & aarch64) |✓ (via [systemd](https://systemd.io/)) |	✓ |	Stable|
+|MacOS (x86_64 & aarch64) |	✓ |		|Stable (See note)|
+|Valve Steam Deck (SteamOS)| 	✓ |		|Stable|
+|WSL2 (x86_64 & aarch64) |	✓ (via [systemd](https://systemd.io/)) |	✓ |	Stable|
+Podman Linux Containers |	✓ (via [systemd](https://systemd.io/)) |	✓ |	Stable|
+|Docker Containers 	|	|✓ |	Stable|
+|Linux (i686) |	✓ (via [systemd](https://systemd.io/)) |	✓ 	|Unstable|
+
 ## NixOS Developer Resources
 [Back to the Top](https://github.com/mikeroyal/NixOS-Guide#table-of-contents)
 
@@ -327,6 +341,12 @@
  
  - [NixOS on WSL](https://github.com/nix-community/NixOS-WSL) is a minimal root filesystem for running NixOS on WSL. It can be used with DistroLauncher as ```install.tar.gz``` or as input to ```wsl --import --version 2```.
  
+ - [Appvm](https://github.com/jollheef/appvm) is a simple application VMs (hypervisor-based sandbox) based on Nix package manager. It uses one read-only /nix directory for all appvms. So creating a new appvm (but not first) is just about one minute.
+
+ - [Deadnix](https://github.com/astro/deadnix) is a tool that scan ```.nix``` files for dead code (unused variable bindings).
+
+ - [nix2container](https://github.com/nlewo/nix2container) isa tool that provides an efficient container development workflow with images built by Nix: it doesn't write tarballs to the Nix store and allows to skip already pushed layers (without having to rebuild them).
+
 ## NixOS Desktop
 [Back to the Top](https://github.com/mikeroyal/NixOS-Guide#table-of-contents)