Update docker publish flow

Author: richardr1126

.github/workflows/docker-publish.yml

@@ -38,7 +38,7 @@ jobs:
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           tags: |
-            type=raw,value=latest
+            type=raw,value=latest,enable=${{ !contains(github.ref, '-pre') }}
             type=semver,pattern={{version}}
 
       - name: Build and push Docker image