fix typo in build_image.yaml

.github/workflows/build_image.yaml

@@ -34,6 +34,6 @@ jobs:
         run: docker push ${{ inputs.image_name }}:${{ github.sha }}
       - name: Push image with tag
         if: "startsWith(github.ref, 'refs/tags/')"
-        run: docker tag ${{ inputs.image_name }}:${{ github.sha }} ${{ inputs.image_name }}:$${{ github.ref_name }} && \
+        run: docker tag ${{ inputs.image_name }}:${{ github.sha }} ${{ inputs.image_name }}:${{ github.ref_name }} && \
              docker push ${{ inputs.image_name }}:${{ github.ref_name }}