From 82e0bcec8ed25dcd87df7e0c050ff74013bdf4c5 Mon Sep 17 00:00:00 2001
From: Son <nguyenkims@users.noreply.github.com>
Date: Mon, 15 Nov 2021 11:13:34 +0100
Subject: [PATCH] add docker build image command for building multi
 architecture image

---
 docs/build-image.md | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 docs/build-image.md

diff --git a/docs/build-image.md b/docs/build-image.md
new file mode 100644
index 00000000..9eefd967
--- /dev/null
+++ b/docs/build-image.md
@@ -0,0 +1,15 @@
+To build a multi-architecture image, you need to use `buildx`.
+
+Here's the command to build and push the images from a Mac M1:
+
+1) First create a new buildx environment (or context). This is only necessary for the first time.
+
+```bash
+docker buildx create --use
+```
+
+2) Build and push the image. Replace `simplelogin/name:tag` by the correct docker image name and tag.
+
+```bash
+docker buildx build --platform linux/amd64,linux/arm64 --push -t simplelogin/name:tag
+```
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