switch to github registry

Author: burenkov-anton

.github/workflows/Docker.yml

@@ -15,7 +15,7 @@ jobs:
     steps:
       - uses: hexlet-basics/exercises-action@release
         with:
-          DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
-          DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
+          DOCKER_USERNAME: ${{ github.actor }}
+          DOCKER_PASSWORD: ${{ secrets.GITHUB_TOKEN }}
       # TODO: move to exercises-action when it works
       # - run:jw

spec.yml

@@ -1,7 +1,7 @@
 ---
 
 language:
-  docker_image: "hexletbasics/exercises-javascript"
+  docker_image: "ghcr.io/hexlet-basics/exercises-javascript"
   extension: js
   exercise_filename: index.js
   exercise_test_filename: test.js