diff --git a/.github/workflows/docker-publish.yml b/.github/workflows/docker-publish.yml
index de9128ce..5a4e82a6 100644
--- a/.github/workflows/docker-publish.yml
+++ b/.github/workflows/docker-publish.yml
@@ -37,6 +37,10 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
+      - name: Normalize image name
+        run: |
+          echo "IMAGE_NAME=$(echo "${{ env.IMAGE_NAME }}" | tr '[:upper:]' '[:lower:]')" >> $GITHUB_ENV
+
       - name: Determine skip condition
         id: skip
         env: