add postgresql container

containers/postgresql-configuration.nix

@@ -0,0 +1,7 @@
+{ system, ... }:
+{
+  inherit system;
+  config = import ./postgresql.nix;
+  autoStart = true;
+  privateNetwork = true;
+}

containers/postgresql.nix

@@ -0,0 +1,27 @@
+{
+  config,
+  pkgs,
+  system,
+  ...
+}:
+{
+  imports = [
+    ./default.nix
+  ];
+  services.postgresql = {
+    dataDir = "/persistent/${config.services.postgresql.package.psqlSchema}";
+    enable = true;
+    enableJIT = system != "riscv64-linux";
+    enableTCPIP = true;
+    extraPlugins = ps: with ps; [ rum ];
+    package =
+      if config.services.postgresql.enableJIT then pkgs.postgresql_17_jit else pkgs.postgresql_17;
+  };
+  services.postgresqlBackup = {
+    compression = "zstd";
+    compressionLevel = 19;
+    enable = true;
+    location = "/persistent/pgbackup";
+  };
+  system.stateVersion = "24.11";
+}

flake.nix

@@ -149,6 +149,7 @@
         let
           containerNames = [
             "default"
+            "postgresql"
           ];
           containerArches = [
             "x86_64-linux"