Add docker

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

hosts/common/user/configs/console/docker/default.nix

@@ -0,0 +1,35 @@
+{
+  username ? throw "username argument is required",
+}:
+{
+  config,
+  inputs,
+  pkgs,
+  ...
+}:
+{
+  virtualisation.docker.rootless = {
+    enable = true;
+    setSocketVariable = true;
+    enableOnBoot = false;
+    storageDriver = "btrfs";
+
+    daemon.settings = {
+      experimental = true;
+      ipv6 = true;
+      fixed-cidr-v6 = "fd00::/80";
+    };
+
+    autoPrune = {
+      enable = true;
+      flags = [ "--all" ];
+    };
+  };
+
+  # This is not set though home-manager because we need to hide the mount
+  # otherwise docker complains with the following error:
+  # dockerd-rootless: failed to start daemon: error initializing graphdriver: prerequisites for driver not satisfied (wrong filesystem?): btrfs
+  environment.persistence."/persist".users.${username}.directories = [ ".local/share/docker" ];
+
+  home-manager.users.${username}.home.packages = with pkgs; [ docker-compose ];
+}