Remove the old staging setup

Move container.nix into infra so local container development is still
possible

Author: Erethon

default.nix

@@ -18,7 +18,7 @@ rec {
   overlays = [ overlay ];
   package = pkgs.web-security-tracker;
   module = import ./nix/web-security-tracker.nix;
-  dev-container = import ./staging/container.nix;
+  dev-container = import ./infra/container.nix;
   dev-setup = import ./nix/dev-setup.nix;
 
   pre-commit-check = pkgs.pre-commit-hooks {

staging/container.nix infra/container.nixstaging/container.nix renamed to infra/container.nix

@@ -18,8 +18,8 @@
     "nixpkgs": {
       "type": "Channel",
       "name": "nixpkgs-unstable",
-      "url": "https://releases.nixos.org/nixpkgs/nixpkgs-24.11pre704822.85f7e662eda4/nixexprs.tar.xz",
-      "hash": "0dqlz0xqd3nn49hnx943y5sfqd7nmj25s6gi1pjm907j3vbgg47k"
+      "url": "https://releases.nixos.org/nixpkgs/nixpkgs-25.05pre739572.041c867bad68/nixexprs.tar.xz",
+      "hash": "1q20wpqany8694vy1rp0zb3kmzf3ds1i09bz273nwf0rfdahidvi"
     }
   },
   "version": 3