laptop: add docs, add docker

README.md

@@ -1,3 +1,107 @@
 # nixos-common
 
 Common modules and packages used across mgit nixos configurations
+
+# Adding laptop configuration
+
+We provide nixos base configurations that install all necesarry things such as git, git ansible integration or dev tools.
+
+There are three available configs:
+- base: Tools needed for all teams (git, docker, etc.)
+- devops: base + Tools and integrations for deployments (ansible, etc.)
+- dev: base + Tools for development (go, etc.)
+
+# Installation (flakes)
+
+This method uses the special args method for convinience
+
+#### In flake.nix, add to inputs:
+```nix
+inputs.mgit.url = "github:mgit-at/nixos-common/master";
+inputs.mgit.inputs.nixpkgs.follows = "nixpkgs";
+```
+
+#### Modify outputs in flake.nix:
+
+before:
+```nix
+{
+  outputs = { nixpkgs }: {
+    # your stuff...
+  };
+}
+```
+
+after:
+
+```nix
+{
+  outputs = { self, nixpkgs, ... } @inputs: let # add self and @inputs, start a let
+    inherit (self) outputs; # add this
+  in # end the let
+  {
+    # your stuff...
+  };
+}
+```
+
+#### Modify all nixosConfigurations in flake.nix:
+
+before:
+```nix
+{
+  nixosConfigurations.my-machine = nixpkgs.lib.nixosSystem {
+    modules = [
+      # your stuff...
+    ];
+  };
+}
+```
+
+after:
+```nix
+{
+  nixosConfigurations.my-machine = nixpkgs.lib.nixosSystem {
+    specialArgs = {inherit inputs outputs;}; # add this
+    modules = [
+      # your stuff...
+    ];
+  };
+}
+```
+
+#### Add to one of your configuration files:
+
+before:
+
+```nix
+{ config, pkgs, lib, ... }: {
+  imports = [
+    # your stuff...
+  ];
+
+  nixpkgs.overlays = [
+    # your stuff...
+  ];
+
+  # your stuff...
+}
+```
+
+after:
+
+```nix
+{ inputs, config, pkgs, lib, ... }: { # add inputs here
+  imports = [
+    inputs.mgit.nixosModules.laptop.all # or devops, or dev
+    # your stuff...
+  ];
+
+  nixpkgs.overlays = [
+    inputs.mgit.overlays.default
+    # your stuff...
+  ];
+
+  # your stuff...
+}
+```

modules/laptop/base.nix

@@ -11,4 +11,10 @@
     enable = true;
     lfs.enable = true;
   };
+
+  virtualisation.docker = {
+    enable = true;
+    # save resources
+    enableOnBoot = false;
+  };
 }