From cb89e09ee8e44092da0ecc08ead9da4e3c5ff79c Mon Sep 17 00:00:00 2001
From: Jonathan Budzenski <jon@elastic.co>
Date: Thu, 7 Apr 2022 12:04:01 -0500
Subject: [PATCH] [7.17] [build] Only use buildx if cross compiling (#128560)

* [build] Only use buildx if cross compiling

* reuse variable

* fix conditional
---
 src/dev/build/tasks/os_packages/docker_generator/run.ts    | 1 +
 .../tasks/os_packages/docker_generator/template_context.ts | 1 +
 .../docker_generator/templates/build_docker_sh.template.ts | 7 ++++++-
 3 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/dev/build/tasks/os_packages/docker_generator/run.ts b/src/dev/build/tasks/os_packages/docker_generator/run.ts
index 5f2bc3de1c4ac..5a1ad6c337291 100644
--- a/src/dev/build/tasks/os_packages/docker_generator/run.ts
+++ b/src/dev/build/tasks/os_packages/docker_generator/run.ts
@@ -86,6 +86,7 @@ export async function runDockerGenerator(
     imageTag,
     dockerBuildDir,
     dockerTargetFilename,
+    dockerCrossCompile,
     baseOSImage,
     dockerBuildDate,
     ubi: flags.ubi,
diff --git a/src/dev/build/tasks/os_packages/docker_generator/template_context.ts b/src/dev/build/tasks/os_packages/docker_generator/template_context.ts
index 334a582bf7b96..7705b1d16d248 100644
--- a/src/dev/build/tasks/os_packages/docker_generator/template_context.ts
+++ b/src/dev/build/tasks/os_packages/docker_generator/template_context.ts
@@ -14,6 +14,7 @@ export interface TemplateContext {
   version: string;
   license: string;
   artifactsDir: string;
+  dockerCrossCompile: boolean;
   imageTag: string;
   dockerBuildDir: string;
   dockerTargetFilename: string;
diff --git a/src/dev/build/tasks/os_packages/docker_generator/templates/build_docker_sh.template.ts b/src/dev/build/tasks/os_packages/docker_generator/templates/build_docker_sh.template.ts
index 934f1b3c020e0..73159cee1f038 100644
--- a/src/dev/build/tasks/os_packages/docker_generator/templates/build_docker_sh.template.ts
+++ b/src/dev/build/tasks/os_packages/docker_generator/templates/build_docker_sh.template.ts
@@ -13,12 +13,17 @@ import { TemplateContext } from '../template_context';
 function generator({
   imageTag,
   imageFlavor,
+  dockerCrossCompile,
   version,
   dockerTargetFilename,
   baseOSImage,
   architecture,
 }: TemplateContext) {
   const dockerArchitecture = architecture === 'aarch64' ? 'linux/arm64' : 'linux/amd64';
+  const dockerTargetName = `${imageTag}${imageFlavor}:${version}`;
+  const dockerBuild = dockerCrossCompile
+    ? `docker buildx build --platform ${dockerArchitecture} -t ${dockerTargetName} -f Dockerfile . || exit 1;`
+    : `docker build -t ${dockerTargetName} -f Dockerfile . || exit 1;`;
   return dedent(`
   #!/usr/bin/env bash
   #
@@ -55,7 +60,7 @@ function generator({
   retry_docker_pull ${baseOSImage}
 
   echo "Building: kibana${imageFlavor}-docker"; \\
-  docker buildx build --platform ${dockerArchitecture} -t ${imageTag}${imageFlavor}:${version} -f Dockerfile . || exit 1;
+  ${dockerBuild}
 
   docker save ${imageTag}${imageFlavor}:${version} | gzip -c > ${dockerTargetFilename}