viyatb-oai dbfe855f4f feat(devcontainer): add separate secure customer profile (#10431) ...

## Description

Keeps the existing Codex contributor devcontainer in place and adds a
separate secure profile for customer use.

## What changed

- leaves `.devcontainer/devcontainer.json` and the contributor
`Dockerfile` aligned with `main`
- adds `.devcontainer/devcontainer.secure.json` and
`.devcontainer/Dockerfile.secure`
- adds secure-profile bootstrap scripts:
  - `post_install.py`
  - `post-start.sh`
  - `init-firewall.sh`
- updates `.devcontainer/README.md` to explain when to use each path

## Secure profile behavior

The new secure profile is opt-in and is meant for running Codex in a
stricter project container:

- preinstalls the Codex CLI plus common build tools
- uses persistent volumes for Codex state, Cargo, Rustup, and GitHub
auth
- applies an allowlist-driven outbound firewall at startup
- blocks IPv6 by default so the allowlist cannot be bypassed via AAAA
routes
- keeps the stricter networking isolated from the default contributor
workflow

## Resulting behavior

- `devcontainer.json` remains the low-friction Codex contributor setup
- `devcontainer.secure.json` is the customer-facing secure option
- the repo supports both workflows without forcing the secure profile on
Codex contributors

2026-04-10 23:32:06 -07:00

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