Fix typo

Author: Chuxel

.devcontainer/devcontainer.json

@@ -2,7 +2,7 @@
 	"name": "Nix test",
 	"build": {
 		"dockerfile": "Dockerfile",
-		"cacheFrom": "ghcr.io/chuxel/devpacks/devcontainer"
+		"cacheFrom": "ghcr.io/chuxel/nix-test/devcontainer"
 	},
 
 	"remoteUser": "devcontainer",

.github/workflows/devcontainer-image.yaml

@@ -29,6 +29,7 @@ jobs:
       - name: Build image
         uses: devcontainers/[email protected]
         with:
+          cacheFrom: ghcr.io/chuxel/nix-test/devcontainer
           imageName: ghcr.io/chuxel/nix-test/devcontainer
           push: always