use variable for registry

.github/workflows/build.yml

@@ -32,13 +32,24 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
 
+      - name: Set Registry based on GITHUB_SERVER_URL
+        run: |
+          if [[ "${{ github.server_url }}" == *"github.com"* ]]; then
+            echo "REGISTRY=ghcr.io" >> $GITHUB_ENV
+          elif [[ "${{ github.server_url }}" == *"git.thecodedom.com"* ]]; then
+            echo "REGISTRY=git.thecodedom.com" >> $GITHUB_ENV
+          else
+            echo "REGISTRY=ghcr.io" >> $GITHUB_ENV
+          fi
+          echo "Registry is $REGISTRY"
+
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
       - name: Login to GitHub Container Registry
         uses: docker/login-action@v3
         with:
-          registry: ${{ github.registry }}
+          registry: ${{ env.registry }}
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}