From 3dc4e41b4f2ecf5bce4d4489033582163acdda32 Mon Sep 17 00:00:00 2001
From: Josua Mayer <josua.mayer@jm0.eu>
Date: Wed, 3 Sep 2025 15:13:41 +0200
Subject: [PATCH] Execute docker build-client step on build host, not target

By default buildkit executes all steps using applications built
for the target platform, if necessary by emulation.

The audiobookshelf web client is not architecture-dependent
and it's build takes a long time.

Update Dockerfile to execute the build-client natively on the build
platform, instead of the target platform.

This drastically reduces docker build time for arm platforms on x86.
---
 Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index 816bdd3c3..1d9f3f9e6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@ ARG NUSQLITE3_DIR="/usr/local/lib/nusqlite3"
 ARG NUSQLITE3_PATH="${NUSQLITE3_DIR}/libnusqlite3.so"
 
 ### STAGE 0: Build client ###
-FROM node:20-alpine AS build-client
+FROM --platform=$BUILDPLATFORM node:20-alpine AS build-client
 
 WORKDIR /client
 COPY /client /client