Installs the OpenAI Codex CLI from the official packaged GitHub release assets and persists ~/.codex in shared state across devcontainers.

The feature installs:

• codex
• a bundled rg binary that matches the upstream Codex package layout

"features": {
    "ghcr.io/sliekens/devcontainer-features/codex:1": {}
}

Pin a specific Codex version when you need deterministic builds:

"features": {
    "ghcr.io/sliekens/devcontainer-features/codex:1": {
        "version": "0.114.0"
    }
}

Copy the block below into a chat with your coding agent:

Add ghcr.io/sliekens/devcontainer-features/codex:1 to this project's Dev Container. Follow https://github.com/sliekens/devcontainer-features/blob/main/src/codex/README.md. Use the collection's shared initializeCommand pipeline (devcontainer + jq + xargs over customizations.sliekens[].initializeCommand) for host bind pre-create; Unix/WSL2 only. Prefer that over hand-written mkdir unless asked.

This directory is bind-mounted from the host so that auth and configuration are preserved across container rebuilds.

Docker cannot bind-mount host paths that do not yet exist. Each feature in this collection that needs host paths declares a host init command under customizations.sliekens.initializeCommand. Wire a single initializeCommand in your devcontainer.json to run all of them (works for any number of features):

"initializeCommand": "devcontainer read-configuration --workspace-folder . --include-merged-configuration | jq -r '(.mergedConfiguration.customizations.sliekens // []) | .[] | .initializeCommand' | xargs -I{} bash -c {}"

Requires devcontainer and jq on the host PATH.

Note: This host init pipeline runs only on Unix-like systems (Linux, macOS, and source code inside WSL2 on Windows). Native Windows (cmd.exe) is not supported — the Dev Containers CLI runs initializeCommand via /bin/sh -c on Unix and cmd.exe /c on native Windows.

If you prefer not to automate with the Dev Containers CLI, jq, and xargs, pre-create the host paths yourself in initializeCommand:

"initializeCommand": "mkdir -p \"$HOME/.codex\""

This feature is released under the MIT License.

The installed tool is subject to its own license: Codex CLI license.

• Codex CLI documentation

• Declare customizations.sliekens.initializeCommand for composable host path pre-create; document automated and manual initializeCommand wiring.

• Fix compatibility with new tarball layout

• Add trailing slash to bind mount source path to mark it explicitly as a directory.

• Use bind mount from host ~/.codex instead of a Docker volume for persistent state.

• Initial release.