1 files changed, 7 insertions, 0 deletions
diff --git a/image-builder/build-sbo-testbuild.sh b/image-builder/build-sbo-testbuild.sh
index 8d08a03..d40ccb1 100755
--- a/image-builder/build-sbo-testbuild.sh
+++ b/image-builder/build-sbo-testbuild.sh
@@ -135,6 +135,13 @@ DOCKERFILE
         _warn "  push failed for ${TB_TAG}."
         return 1
     fi
+
+    # Drop the image this rebuild superseded rather than leaving it resident
+    # until a daily prune; see the same step in build-full-image.sh for why
+    # that mattered. Best-effort: a failed prune costs space, not correctness.
+    _log "  Pruning superseded images..."
+    docker image prune -f >/dev/null 2>&1 || _warn "  image prune failed (ignored)"
+
     _log "=== Done: ${TB_TAG} ==="
 }