pinwheel: Add module for podman

hosts/pinwheel/modules/podman/default.nix

@@ -0,0 +1,18 @@
+{ pkgs, ... }:
+{
+  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;
+    };
+  };
+
+  home-manager.users.alex = {
+    home.packages = [ pkgs.podman-compose ];
+  };
+}