[ghost] Adds ghost demo.

system/hosts/mcp/containers/ghost.nix

@@ -0,0 +1,16 @@
+{ config, ... }:
+let
+  inherit (import ./lib.nix config) mkContainer terakoda;
+in
+{
+  virtualisation.oci-containers.containers.ghost = mkContainer rec {
+    image = "ghost:5";
+    hostName = "ghost";
+    domain = terakoda;
+    port = 2368;
+    environment = {
+      "NODE_ENV" = "development";
+      "url" = "https://${hostName}.${domain}";
+    };
+  };
+}