add size compare job

Author: SumedhSankhe

.github/workflows/docker-build-push.yml

@@ -102,7 +102,7 @@ jobs:
   compare-sizes:
     runs-on: ubuntu-latest
     needs: build-and-push
-    if: always() && github.event_name != 'pull_request'  # Run even if some builds fail
+    if: success() && github.event_name != 'pull_request'  # Only run if ALL builds succeed
     permissions:
       contents: read
       packages: read