Update deploy.yml to use ghcr.io/

Author: oleg-nenashev

.github/workflows/deploy.yml

@@ -54,8 +54,8 @@ jobs:
       - name: Build in the dev container image
         uses: devcontainers/[email protected]
         with:
-            imageName: gradleup/gradleup.github.io-builder
-            cacheFrom: gradleup/gradleup.github.io-builder
+            imageName: ghcr.io/gradleup/gradleup.github.io-builder
+            cacheFrom: ghcr.io/gradleup/gradleup.github.io-builder
             push: always
             runCmd: |
               mkdocs build