Official Alpine image: integrated terminal fails because bun-pty lacks musl support

Description

The integrated terminal remains blank when connecting to the official ghcr.io/anomalyco/opencode:1.18.29 server from either the browser or Flatpak desktop client. It also fails through the directly exposed service port, without a reverse proxy.

The official image uses Alpine/musl, while OpenCode 1.18.29 pins bun-pty@0.4.8, whose Linux PTY library is glibc-linked. Musl support was added in bun-pty@0.4.10.

Installing Alpine's gcompat package and preloading it fixes the terminal:

apk add --no-cache gcompat && export LD_PRELOAD=/lib/libgcompat.so.0

Suggested fix:

• Upgrade bun-pty to 0.4.10 or newer.
• Add a container test that creates a PTY instead of only running opencode --version.

Plugins

No plugins required to reproduce.

OpenCode version

1.18.29, official ghcr.io/anomalyco/opencode image.

Steps to reproduce

1. Run ghcr.io/anomalyco/opencode:1.18.29 with opencode serve --hostname 0.0.0.0 --port 4096.
2. Connect directly to port 4096 using the web interface or Flatpak desktop client.
3. Open the integrated terminal.
4. Observe that the terminal remains blank.
5. Install gcompat, export LD_PRELOAD=/lib/libgcompat.so.0, and restart OpenCode.
6. Observe that the terminal now works.

Screenshot and/or share link

No response

Operating System

Official OpenCode Alpine Linux container.

Terminal

OpenCode integrated terminal in browser and Flatpak desktop client.