diff --git a/.github/workflows/docker-image.yml b/.github/workflows/docker-image.yml
index c209428..b3ffa06 100644
--- a/.github/workflows/docker-image.yml
+++ b/.github/workflows/docker-image.yml
@@ -28,5 +28,5 @@ jobs:
     - name: Build the Docker image
       run: |
         echo "${{ secrets.DOCKER_HUB_TOKEN }}" | docker login -u "${{ secrets.DOCKER_HUB_USERNAME }}" --password-stdin docker.io
-        docker build . --file Dockerfile --tag docker.io/${{ secrets.DOCKER_HUB_USERNAME }}/${{ secrets.DOCKER_HUB_REPOSITORY }}:${{ GITHUB_REF_NAME }}
-        docker push docker.io/${{ secrets.DOCKER_HUB_USERNAME }}/${{ secrets.DOCKER_HUB_REPOSITORY }}:${{ GITHUB_REF_NAME }}
+        docker build . --file Dockerfile --tag docker.io/${{ secrets.DOCKER_HUB_USERNAME }}/${{ secrets.DOCKER_HUB_REPOSITORY }}:$GITHUB_REF_NAME
+        docker push docker.io/${{ secrets.DOCKER_HUB_USERNAME }}/${{ secrets.DOCKER_HUB_REPOSITORY }}:$GITHUB_REF_NAME