fix: error build syntax error

Author: ytabuchi

.github/workflows/docker-image.yml

@@ -23,10 +23,10 @@ jobs:
         password: ${{ secrets.DOCKERHUB_TOKEN }}
 
     - name: Build the Docker image
-      run: docker build . --file Dockerfile \\
+      run: docker build --file Dockerfile \\
         --platform linux/amd64,linux/arm64 \\
         --sbom=true \\
-        --tag ${{ vars.DOCKERHUB_IMAGE_NAME }}:$(date +%Y%m%d)
+        --tag ${{ vars.DOCKERHUB_IMAGE_NAME }}:$(date +%Y%m%d) .
 
     - name: Push the Docker image
       run: docker push ${{ vars.DOCKERHUB_IMAGE_NAME }}:$(date +%Y%m%d)