github: Tweak workflow.

.github/workflows/publish.yml

@@ -8,25 +8,27 @@ env:
 jobs:
   docker:
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
     steps:
-      - 
-        name: Checkout
+      - name: Checkout
         uses: actions/checkout@v4
-      - 
-        name: Docker metadata
-        id: meta
-        uses: docker/metadata-action@v5
-        with:
-          images: name/app
-      - 
-        name: Log in to the Container registry
+
+      - name: Log in to the Container registry
         uses: docker/login-action@v3
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
-      -
-        name: Build and push
+
+      - name: Docker metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+
+      - name: Build and push
         uses: docker/build-push-action@v6
         with:
           context: .