Add latest tag back

Author: Munkkeli

.github/workflows/Prebuild.yaml

@@ -24,6 +24,9 @@ jobs:
         uses: docker/metadata-action@v4
         with:
           images: ${{ env.REGISTRY }}/${{ github.repository }}
+          tags: |
+            # Set latest tag for default branch
+            type=raw,value=latest,enable={{is_default_branch}}
 
       - name: 'Login to GitHub Container Registry'
         uses: docker/login-action@v3