diff --git a/.github/workflows/docker-image.yml b/.github/workflows/docker-image.yml
index 9c22e58..5112706 100644
--- a/.github/workflows/docker-image.yml
+++ b/.github/workflows/docker-image.yml
@@ -16,7 +16,7 @@ concurrency:
   cancel-in-progress: true
 env:
   REGISTRY: ghcr.io
-  IMAGE_NAME: ${{ github.repository }}
+  IMAGE_NAME: ${{ toLower(github.repository) }}
 jobs:
   build-and-push:
     runs-on: ubuntu-latest