use !pre

Author: ohaibbq

.github/workflows/build.yml

@@ -118,7 +118,7 @@ jobs:
             type=ref,event=pr
             type=semver,pattern={{version}}
             type=semver,pattern={{major}}.{{minor}}
-            type=raw,value=latest,enable={{is_default_branch}}
+            type=raw,value=latest,enable=${{ !contains(github.ref_name, 'pre') }}
 
       - name: Create manifest list and push
         working-directory: ${{ runner.temp }}/digests