From b1a55387997eb95bcd250ef157460523262e113c Mon Sep 17 00:00:00 2001
From: Brad Stein <Brad.Stein@gmail.com>
Date: Sun, 12 Apr 2026 11:04:13 -0300
Subject: [PATCH] ci: fix local image buildx load platform

---
 scripts/ci/build-images.sh | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/scripts/ci/build-images.sh b/scripts/ci/build-images.sh
index 097c086..b233d6b 100755
--- a/scripts/ci/build-images.sh
+++ b/scripts/ci/build-images.sh
@@ -18,18 +18,24 @@ should_push() {
 build_with_buildx() {
   local dockerfile=$1
   local image=$2
+  local platform_args=()
 
   if should_push; then
+    platform_args=(--platform "${PLATFORMS}")
     docker buildx build \
-      --platform "${PLATFORMS}" \
+      "${platform_args[@]}" \
       -f "${dockerfile}" \
       -t "${image}:${IMAGE_TAG}" \
       -t "${image}:latest" \
       --push \
       "${ROOT_DIR}"
   else
+    # buildx cannot `--load` a manifest list, so load the host platform only.
+    local host_platform
+    host_platform="$(docker version --format '{{.Server.Os}}/{{.Server.Arch}}' 2>/dev/null || echo linux/amd64)"
+    platform_args=(--platform "${host_platform}")
     docker buildx build \
-      --platform "${PLATFORMS}" \
+      "${platform_args[@]}" \
       -f "${dockerfile}" \
       -t "${image}:${IMAGE_TAG}" \
       -t "${image}:latest" \