Update docker-publish.yml

Author: jontyms

.github/workflows/docker-publish.yml

@@ -19,12 +19,12 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v1
 
-      - name: Login to GitHub Container Registry
-        uses: docker/login-action@v2
+      - name: Log in to the Container registry
+        uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
         with:
-          registry: ghcr.io
+          registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
-          password: ${{ secrets.GHCR_PAT }}
+          password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Extract branch name
         id: extract_branch