fix: run release builder by default

Author: dareste

.github/workflows/release-builder.yml

@@ -12,7 +12,7 @@ env:
 
 jobs:
   build:
-    if: endsWith(github.event.release.tag_name, '-krew')
+    if: "!endsWith(github.event.release.tag_name, '-docker')"
     permissions:
       contents: write