diff --git a/.github/workflows/docker-testimage.yml b/.github/workflows/docker-testimage.yml
index 42f4bfb..3284917 100644
--- a/.github/workflows/docker-testimage.yml
+++ b/.github/workflows/docker-testimage.yml
@@ -18,7 +18,7 @@ jobs:
         with:
           context: .
           push: true
-          tags: supertypo/kaspa-rest-server:${{github.sha}}
+          tags: supertypo/kaspa-rest-server:${{github.sha.slice(0,8)}}
           file: ./docker/Dockerfile
           build-args: |
             version=${{github.ref_name}}