My Next.js 15.5.20 site (standalone output mode) builds successfully on Appwrite Sites, but the deployment fails at the final packaging step with:
[sidecar:build] Build archive was not created at /mnt/code/code.tar.gz
The build log shows the open-runtimes builder chose squashfs as the packaging format:
[open-runtimes] Auto compression: squashfs
Creating 4.0 filesystem on /mnt/code/code.sqfs, block size 1048576.
The builder completed everything correctly — compiled the app, detected the standalone build, bundled for SSR, and created the squashfs archive. But the sidecar is looking for a .tar.gz file that was never created.
Steps to reproduce:
Deploy a Next.js 15.5.20 app with output: "standalone" in next.config.ts
Build completes successfully (all pages generated, no errors)
Deployment fails with the code.tar.gz not found error
Relevant log sequence:
[open-runtimes] Detected standalone Next.js build.
[open-runtimes] Bundling for SSR started.
[open-runtimes] Bundling for SSR finished.
[open-runtimes] Auto compression: squashfs
[open-runtimes] Build packaging finished.
[open-runtimes] Build cache saved.
[open-runtimes] Build finished.
[sidecar:build] Build archive was not created at /mnt/code/code.tar.gz
Expected behavior: The sidecar should recognize the squashfs archive produced by the builder, or the builder and sidecar should agree on the same packaging format.
Environment:
Framework: Next.js 15.5.20
Output mode: standalone
Platform: Appwrite Cloud (Sites)
