fix: update docker-image.yml

Author: ytabuchi

.github/workflows/docker-image.yml

@@ -29,4 +29,4 @@ jobs:
       run: docker push ${{ vars.DOCKERHUB_IMAGE_NAME }}:$(date +%Y%m%d)
 
     - name: Push the Docker image with latest tag
-      run: docker tag ${{ vars.DOCKERHUB_IMAGE_NAME }}:$(date +%Y%m%d) {{ vars.DOCKERHUB_IMAGE_NAME }}:latest && docker push ${{ vars.DOCKERHUB_IMAGE_NAME }}:latest
+      run: docker tag ${{ vars.DOCKERHUB_IMAGE_NAME }}:$(date +%Y%m%d) ${{ vars.DOCKERHUB_IMAGE_NAME }}:latest && docker push ${{ vars.DOCKERHUB_IMAGE_NAME }}:latest