containerization & virtualization update

Checklog:
 - Switched from `Docker` to `Podman`
 - Added `podman-tui` and `podman-compose` to packages
 - Added rootless nix code snippet for `Docker`
 - Added `distrobox` and `qemu` to packages
 - Added `tgpt` to packages

README.md

@@ -38,6 +38,8 @@ This system leverages cutting-edge channels and versions of software to provide
 
 This approach ensures that you stay on the forefront of technology, receiving the most recent software advancements promptly. 🚨However, it's important to note that this emphasis on bleeding-edge software may impact the stability of the system. 
 
+🚨Please note that the system utilizes **Podman** instead of **Docker** for containerization due to various reasons, primarily related to security (rootless and daemonless containers), easier migration to Kubernetes, availability of pods, compatibility with systemd, and better security for `distrobox`. If you prefer to use **Docker** instead of **Podman**, you can make the switch by commenting out the **Podman** section in the `configuration.nix` file and uncommenting the **Docker** section. More details on **Docker** configuration in NixOS can be found [here](https://nixos.wiki/wiki/Docker).
+
 You have the flexibility to customize these configurations according to your needs by modifying the respective configuration files.
 
 ## 🌟 Showcase
@@ -85,6 +87,7 @@ The showcased images do not reflect the latest version of the system's appearanc
 | Wallpaper             | Wpaperd                     |
 | Graphical Boot        | Plymouth + Catppuccin-plymouth |
 | Display Manager       | Greetd + Tuigreet           |
+| Containerization      | Podman                      |
 
 And many other useful utilities. The full list can be found in the system configuration at `/nixos/configuration.nix` file.
 
@@ -207,6 +210,7 @@ Here are some tips to enhance your Rust experience on this system:
    - `cargo-spellcheck`
    - `cargo-modules`
    - `cargo-bloat`
+   - `cargo-unused-features`
    - `bacon`
 
 5. **Environment Setup:**

nixos/configuration.nix

@@ -391,8 +391,26 @@
   # Enable CUPS to print documents.
   # services.printing.enable = true;
   
-  # Enable docker
+  # Enable container manager
-  virtualisation.docker.enable = true;
+  # Enable Docker
+  # virtualisation.docker.enable = true;
+  # virtualisation.docker.rootless = {
+  #   enable = true;
+  #   setSocketVariable = true;
+  # };
+  # users.extraGroups.docker.members = [ "xnm" ];
+  # Enable Podman
+  virtualisation = {
+    podman = {
+      enable = true;
+
+      # Create a `docker` alias for podman, to use it as a drop-in replacement
+      dockerCompat = true;
+
+      # Required for containers under podman-compose to be able to talk to each other.
+      defaultNetwork.settings.dns_enabled = true;
+    };
+  };
  
   # Enable sound with pipewire.
   sound.enable = true;
@@ -416,7 +434,7 @@
   users.users.xnm = {
     isNormalUser = true;
     description = "xnm";
-    extraGroups = [ "networkmanager" "input" "wheel" "video" "audio" "docker" "tss" ];
+    extraGroups = [ "networkmanager" "input" "wheel" "video" "audio" "tss" ];
     shell = pkgs.fish;
     packages = with pkgs; [
       spotify
@@ -512,6 +530,9 @@
     git-ignore
     just
     xh
+    tgpt
+    distrobox
+    qemu
     wezterm
     cool-retro-term
     # mcfly # terminal history
@@ -552,6 +573,9 @@
     felix-fm
     chafa
 
+    podman-compose
+    podman-tui
+
     lazydocker
     lazygit
     neofetch