It's an interesting difference in backgrounds, maybe? I tried to build this on OpenBSD where we don't have docker and we use 'make' instead of random shell scripts.
For what it's worth, this is from the build log:
error code 1
error path /home/holsta/3rdparty/fusion/frontend/node_modules/@sveltejs/kit
error command failed
error command sh -c node postinstall.js
error /home/holsta/3rdparty/fusion/frontend/node_modules/rollup/dist/native.js:84
error throw new Error(
error ^
error
error Error: Your current platform "openbsd" and architecture "x64" combination is not yet supported by the native Rollup build. Please use the WASM build "@rollup/wasm-node" instead.
For what it's worth, this is from the build log: