feat(ci): just use nix for all the things

.drone.yml

@@ -7,16 +7,12 @@ platform:
   arch: arm64
 
 steps:
-- name: Build site
+- name: Build and deploy site
   image: nixos/nix
   commands:
     - nix --experimental-features 'nix-command flakes' build
-- name: Deploy site
-  image: alpine
-  commands:
-    - apk add curl ca-certificates zip
-    - cd result/ && zip -r ../deploy.zip * && cd ..
-    - 'curl --fail --upload-file deploy.zip -H "Authorization: token $GITEA_TOKEN" https://git.ashhhleyyy.dev/api/packages/ash/generic/caaard/$DRONE_COMMIT_SHA/caaard.zip'
+    - cd result/ && nix --experimental-features 'nix-command flakes' run nixpkgs#zip -- -r ../deploy.zip * && cd ..
+    - 'nix --experimental-features "nix-command flakes" run nixpkgs#curl -- --fail --upload-file deploy.zip -H "Authorization: token $GITEA_TOKEN" https://git.ashhhleyyy.dev/api/packages/ash/generic/caaard/$DRONE_COMMIT_SHA/caaard.zip'
   environment:
     GITEA_TOKEN:
       from_secret: GITEA_TOKEN