Extension not working with `spawn docker ENOENT` (inside a code-server container)

[Quentame]

Description

The extension is not working inside a code-server container.

Environment

• Editor: VS Code (via code-server)
• Extension version: 0.3.1
• OS: Debian GNU/Linux 13 (trixie) aarch64
• Host: Raspberry Pi 5 Model B Rev 1.1
• Docker version: 29.6.1
• versions:
  • code-server: v4.127.0
  • VS Code: 1.127.0

devcontainer config

The one in Home Assistant core: https://github.com/home-assistant/core/blob/dev/.devcontainer/devcontainer.json

Paste relevant parts of .devcontainer/devcontainer.json (image, remoteUser, post*Command):

{
  "name": "Home Assistant Dev",
  "context": "..",
  "dockerFile": "../Dockerfile.dev",
  "postCreateCommand": "git config --global --add safe.directory ${containerWorkspaceFolder} && script/setup",
  "postStartCommand": "script/bootstrap",
  ...
}

Steps to Reproduce

1. Run code-server via Docker (https://hub.docker.com/r/codercom/code-server)

docker-compose.yaml

name: code-server

services:
  code-server:
    container_name: code-server
    image: codercom/code-server:latest
    restart: unless-stopped
    environment:
      - PUID=1000
      - PGID=1000
      - PASSWORD=password #optional, otherwise found in config/code-server/config.yaml
    volumes:
      - ./local:/home/coder/.local
      - ./config:/home/coder/.config
      - ./dev/:/home/coder/project
    ports:
      - 8080:8080

networks:
  default:
    name: code-server

2. Go to the code-server UI in http://localhost:8080/
3. git clone https://github.com/home-assistant/core.git && cd core
4. Run the "Devcontainer: Open Folder in Devcontainer (SSH)" (or "Devcontainer: Rebuild & Open") command

Expected Behavior

Open the project inside a dev container

Actual Behavior

No dev container created

Logs

From the "Codium Devcontainer" output channel:

$ docker inspect codium-devcontainer-core
Staged entrypoint.sh in .devcontainer for build.
Prepared temporary Dockerfile with postCreateCommand.

$ docker build -t codium-devcontainer-core -f /home/coder/project/home-assistant/core/.devcontainer/Dockerfile.codium-temp --build-arg BASE_IMAGE=node:22-bookworm /home/coder/project/home-assistant/core
Cleaned up staged entrypoint.sh from workspace.
Error: spawn docker ENOENT

Additional Context

Linked with coder/code-server#1315 ?