adjust release tag

Author: omohokcoj

.github/workflows/docker.yml

@@ -30,7 +30,9 @@ jobs:
       uses: docker/setup-buildx-action@v3
 
     - name: Create .version file
-      run: echo ${{ github.ref_name }} > .version
+      env:
+        REF_NAME: ${{ github.ref_name }}
+      run: echo "$REF_NAME" > .version
 
     - name: Login to Docker Hub
       uses: docker/login-action@v3