From 4654458cb08c4a67b1a287851313c0471d2a9a05 Mon Sep 17 00:00:00 2001
From: "Zaiming (Stone) Shi" <zmstone@gmail.com>
Date: Fri, 6 Oct 2023 12:44:05 +0200
Subject: [PATCH] build: use env variable to disalbe buildx provenance
 attestations

So it can work with older version docker buildkit
---
 build | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/build b/build
index 874e4088c..5c2bb556b 100755
--- a/build
+++ b/build
@@ -407,10 +407,10 @@ make_docker() {
         PRODUCT_DESCRIPTION='Official docker image for EMQX Enterprise, an enterprise MQTT platform at scale. '
         DOCUMENTATION_URL='https://docs.emqx.com/en/enterprise/latest/'
     fi
-    # shellcheck disable=SC2155
-    local ISO_8601_DATE="$(date -u +"%Y-%m-%dT%H:%M:%SZ")"
-    # shellcheck disable=SC2155
-    local GIT_REVISION="$(git rev-parse HEAD)"
+    local ISO_8601_DATE GIT_REVISION
+    ISO_8601_DATE="$(date -u +"%Y-%m-%dT%H:%M:%SZ")"
+    GIT_REVISION="$(git rev-parse HEAD)"
+    export BUILDX_NO_DEFAULT_ATTESTATIONS=1
     local DOCKER_BUILDX_ARGS=(
        --build-arg BUILD_FROM="${EMQX_BUILDER}" \
        --build-arg RUN_FROM="${EMQX_RUNNER}" \
@@ -430,7 +430,6 @@ make_docker() {
        --label org.opencontainers.image.licenses="${LICENSE}" \
        --label org.opencontainers.image.otp.version="${EMQX_BUILDER_OTP}" \
        --tag "${EMQX_IMAGE_TAG}" \
-       --provenance false \
        --pull
     )
     if [ "${DOCKER_BUILD_NOCACHE:-false}" = true ]; then