Building loong64 Docker Images on NixOS

Fri, 20 Jun 2025 00:00:00 +0000

When trying to cross-compile a loong64 image on an x86_64 platform using docker buildx, a problem occurred:

1 warning found (use docker --debug to expand):
- InvalidBaseImagePlatform: Base image lcr.loongnix.cn/library/node:22.15-alpine3.21 was pulled with platform "linux/loong64", expected "linux/amd64" for current build

ERROR: failed to solve: process "/bin/sh -c npm run build" did not complete successfully: exit code: 1

When trying to build an image for another platform, the build arg that needs to be provided is --build-arg BUILDPLATFORM=<arch>. The builder used by docker buildx can be seen with docker buildx ls. Find the builder in use and inspect it:

Loong on CuSO4_Deposit

Building loong64 Docker Images on NixOS