From 868348ce00818671e733238cabaaabc47bc2eb72 Mon Sep 17 00:00:00 2001
From: Drew Newberry <anewberry@nvidia.com>
Date: Tue, 10 Feb 2026 17:55:07 -0800
Subject: [PATCH] fix(ci): create multi-platform buildx builder for ECR publish
 mode

---
 build/scripts/docker-publish-multiarch.sh | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/build/scripts/docker-publish-multiarch.sh b/build/scripts/docker-publish-multiarch.sh
index 530808340..a1ebc007c 100755
--- a/build/scripts/docker-publish-multiarch.sh
+++ b/build/scripts/docker-publish-multiarch.sh
@@ -68,6 +68,14 @@ case "$MODE" in
     IMAGE_PREFIX=""
     EXTRA_BUILD_FLAGS="--provenance=false --sbom=false"
     TAG_LATEST=true
+
+    # Ensure a multi-platform builder exists
+    if ! docker buildx inspect multiarch >/dev/null 2>&1; then
+      echo "Creating multi-platform buildx builder..."
+      docker buildx create --name multiarch --use --bootstrap
+    else
+      docker buildx use multiarch
+    fi
     ;;
   *)
     echo "Unknown mode: $MODE (expected 'registry' or 'ecr')" >&2