[pocket-id] Creates Pocket ID service.

system/hosts/mcp/containers.nix

@@ -8,6 +8,7 @@
     ./containers/jobhunt.nix
     ./containers/nextcloud.nix
     ./containers/prometheus.nix
+    ./containers/pocket-id.nix
     ./containers/public-homepage.nix
     ./containers/searxng.nix
     ./containers/shared-postgres.nix