Add build command

Makefile

@@ -0,0 +1,2 @@
+build: build.sh
+	bash ./build.sh

README.md

@@ -11,3 +11,7 @@ Check out the website to learn more: https://zmk.dev/
 You can also come join our [ZMK Discord Server](https://zmk.dev/community/discord/invite)
 
 To review features, check out the [feature overview](https://zmk.dev/docs/). ZMK is under active development, and new features are listed with the [enhancement label](https://github.com/zmkfirmware/zmk/issues?q=is%3Aissue+is%3Aopen+label%3Aenhancement) in GitHub. Please feel free to add 👍 to the issue description of any requests to upvote the feature.
+
+## My build command
+
+For Aurora Lily58 in https://github.com/narze/zmk-config, run `make` in Devcontainer

build.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+SIDES=(left right)
+for side in ${SIDES[@]}
+do
+	west build -b nice_nano_v2 -s /workspaces/zmk/app -d /workspaces/zmk-config/build/aurora_lily58_$side.build  -- -DSHIELD="splitkb_aurora_lily58_$side nice_view_adapter nice_view" -DZMK_CONFIG="/workspaces/zmk-config/config"
+	cp /workspaces/zmk-config/build/aurora_lily58_$side.build/zephyr/zmk.uf2 /workspaces/zmk-config/build/aurora_lily58_$side.uf2
+done