weasel: add podman

m/weasel/configuration.nix

@@ -4,6 +4,7 @@
   imports = [
     ../common/ssf.nix
     ../module/hut-substituter.nix
+    ./virtualization.nix
   ];
 
   # Select this using the ID to avoid mismatches

m/weasel/virtualization.nix

@@ -0,0 +1,21 @@
+{ pkgs, ... }:
+
+{
+  # Enable common container config files in /etc/containers
+  virtualisation.containers.enable = true;
+  virtualisation = {
+    podman = {
+      enable = true;
+
+      # Required for containers under podman-compose to be able to talk to each other.
+      defaultNetwork.settings.dns_enabled = true;
+    };
+  };
+
+  # Useful other development tools
+  environment.systemPackages = with pkgs; [
+    dive # look into docker image layers
+    podman-tui # status of containers in the terminal
+    podman-compose # start group of containers for dev
+  ];
+}