Fixed workflow build

.forgejo/workflows/build.yml

@@ -56,3 +56,19 @@ jobs:
             -H "Authorization: token $TOKEN" \
             -F "attachment=@$FILE"
 
+      - name: Set up Docker Buildx
+        uses: https://code.forgejo.org/actions/docker-setup-buildx@v1
+
+      - name: Login to Registry
+        run: |
+          echo "${{ secrets.REGISTRY_TOKEN }}" | docker login registry.derickphan.com -u _ --password-stdin
+
+      - name: Build and push Docker image
+        run: |
+          TAG="${{ github.ref_name }}"
+          if [ -z "$TAG" ]; then
+            TAG="latest"
+          fi
+          docker build -t registry.derickphan.com/tinyweb:$TAG .
+          docker push registry.derickphan.com/tinyweb:$TAG
+