Add docker

hosts/voyager/default.nix

@@ -37,6 +37,7 @@
       username = "itsdrike";
 
       sound.enable = true;
+      docker.enable = true;
 
       impermanence = {
         root = {
@@ -48,6 +49,7 @@
 
           extraDirectories = [
             "/var/log"
+            "/var/lib/docker"
           ];
         };
 

options/system/default.nix

@@ -1,6 +1,5 @@
-{lib, ...}:
-with lib; let
-  inherit (lib) mkOption;
+{lib, ...}: let
+  inherit (lib) mkOption mkEnableOption types;
 in {
   imports = [
     ./boot
@@ -21,5 +20,14 @@ in {
     sound = {
       enable = mkEnableOption "sound related programs and audio-dependent programs";
     };
+
+    docker = {
+      enable = mkEnableOption "docker virtualisation platform";
+      data-root = mkOption {
+        type = types.str;
+        description = "Path to the directory where docker data should be stored";
+        default = "/var/lib/docker";
+      };
+    };
   };
 }

system/shared/services/default.nix

@@ -7,5 +7,6 @@ _: {
     ./thermald.nix
     ./journald.nix
     ./fstrim.nix
+    ./docker.nix
   ];
 }

system/shared/services/docker.nix

@@ -0,0 +1,16 @@
+{
+  lib,
+  config,
+  ...
+}: let
+  cfg = config.myOptions.system.docker;
+in {
+  config = lib.mkIf cfg.enable {
+    virtualisation.docker = {
+      enable = true;
+      storageDriver = "btrfs";
+
+      daemon.settings.data-root = cfg.data-root;
+    };
+  };
+}