diff --git a/tools/packaging/static-build/busybox/build.sh b/tools/packaging/static-build/busybox/build.sh
index 9100b315e7..0b2fe9169c 100755
--- a/tools/packaging/static-build/busybox/build.sh
+++ b/tools/packaging/static-build/busybox/build.sh
@@ -16,6 +16,7 @@ source "${script_dir}/../../scripts/lib.sh"
 
 
 readonly busybox_builder="${script_dir}/build-static-busybox.sh"
+# shellcheck disable=SC2154
 readonly busybox_builddir="${repo_root_dir}/build/busybox/builddir"
 
 busybox_version="$(get_from_kata_deps ".externals.busybox.version")"
@@ -26,10 +27,12 @@ readonly BUSYBOX_URL="${busybox_url}"
 
 
 container_image="${BUSYBOX_CONTAINER_BUILDER:-$(get_busybox_image_name)}"
-[ "${CROSS_BUILD}" == "true" ] && container_image="${container_image}-cross-build"
+# shellcheck disable=SC2154
+[[ "${CROSS_BUILD}" == "true" ]] && container_image="${container_image}-cross-build"
 
+# shellcheck disable=SC2154,SC2086
 docker pull "${container_image}" || \
-	(docker $BUILDX build $PLATFORM \
+	(docker ${BUILDX} build ${PLATFORM} \
 		-t "${container_image}" "${script_dir}" \
 	 # No-op unless PUSH_TO_REGISTRY is exported as "yes"
 	 push_to_registry "${container_image}")