mirror of
https://github.com/openai/codex.git
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## Summary - leave the default contributor devcontainer on its lightweight platform-only Docker runtime - install bubblewrap in setuid mode only in the secure devcontainer image for running Codex inside Docker - add Docker run args to the secure profile for bubblewrap's required capabilities - use explicit `seccomp=unconfined` and `apparmor=unconfined` in the secure profile instead of shipping a custom seccomp profile - document that the relaxed Docker security options are scoped to the secure profile ## Why Docker's default seccomp profile blocks bubblewrap with `pivot_root: Operation not permitted`, even when the container has `CAP_SYS_ADMIN`. Docker's default AppArmor profile also blocks bubblewrap with `Failed to make / slave: Permission denied`. A custom seccomp profile works, but it is hard for customers to audit and understand. Using Docker's standard `seccomp=unconfined` option is clearer: the secure profile intentionally relaxes Docker's outer sandbox just enough for Codex to construct its own bubblewrap/seccomp sandbox inside the container. The default contributor profile does not get these expanded runtime settings. ## Validation - `sed '/\\/\\*/,/\\*\\//d' .devcontainer/devcontainer.json | jq empty` - `jq empty .devcontainer/devcontainer.secure.json` - `git diff --check` - `docker build --platform=linux/arm64 -t codex-devcontainer-bwrap-test-arm64 ./.devcontainer` - `docker build --platform=linux/arm64 -f .devcontainer/Dockerfile.secure -t codex-devcontainer-secure-bwrap-test-arm64 .` - interactive `docker run -it` smoke tests: - verified non-root users `ubuntu` and `vscode` - verified secure image `/usr/bin/bwrap` is setuid - verified user/pid namespace, user/network namespace, and preserved-fd `--ro-bind-data` bwrap commands - reran secure-image smoke test with simplified `seccomp=unconfined` setup: - `bwrap-basic-ok` - `bwrap-netns-ok` - `codex-ok` - ran Codex inside the secure image: - `codex --version` -> `codex-cli 0.120.0` - `codex sandbox linux --full-auto -- /bin/sh -lc '...'` -> exited 0 and printed `codex-inner-ok` Note: direct `bwrap --proc /proc` is still denied by this Docker runtime, and Codex's existing proc-mount preflight fallback handles that by retrying without `--proc`. --------- Co-authored-by: Codex <noreply@openai.com>
84 lines
3.0 KiB
JSON
84 lines
3.0 KiB
JSON
{
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"$schema": "https://raw.githubusercontent.com/devcontainers/spec/main/schemas/devContainer.schema.json",
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"name": "Codex (Secure)",
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"build": {
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"dockerfile": "Dockerfile.secure",
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"context": "..",
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"args": {
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"TZ": "${localEnv:TZ:UTC}",
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"NODE_MAJOR": "22",
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"RUST_TOOLCHAIN": "1.92.0",
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"CODEX_NPM_VERSION": "latest"
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}
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},
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"runArgs": [
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"--cap-add=SYS_ADMIN",
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"--cap-add=SYS_CHROOT",
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"--cap-add=SETUID",
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"--cap-add=SETGID",
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"--cap-add=SYS_PTRACE",
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"--security-opt=seccomp=unconfined",
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"--security-opt=apparmor=unconfined",
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"--cap-add=NET_ADMIN",
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"--cap-add=NET_RAW"
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],
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"init": true,
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"updateRemoteUserUID": true,
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"remoteUser": "vscode",
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"workspaceMount": "source=${localWorkspaceFolder},target=/workspace,type=bind,consistency=delegated",
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"workspaceFolder": "/workspace",
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"mounts": [
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"source=codex-commandhistory-${devcontainerId},target=/commandhistory,type=volume",
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"source=codex-home-${devcontainerId},target=/home/vscode/.codex,type=volume",
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"source=codex-gh-${devcontainerId},target=/home/vscode/.config/gh,type=volume",
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"source=codex-cargo-registry-${devcontainerId},target=/home/vscode/.cargo/registry,type=volume",
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"source=codex-cargo-git-${devcontainerId},target=/home/vscode/.cargo/git,type=volume",
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"source=codex-rustup-${devcontainerId},target=/home/vscode/.rustup,type=volume",
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"source=${localEnv:HOME}/.gitconfig,target=/home/vscode/.gitconfig,type=bind,readonly"
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],
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"containerEnv": {
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"RUST_BACKTRACE": "1",
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"CODEX_UNSAFE_ALLOW_NO_SANDBOX": "1",
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"CODEX_ENABLE_FIREWALL": "1",
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"CODEX_INCLUDE_GITHUB_META_RANGES": "1",
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"OPENAI_ALLOWED_DOMAINS": "api.openai.com auth.openai.com github.com api.github.com codeload.github.com raw.githubusercontent.com objects.githubusercontent.com crates.io index.crates.io static.crates.io static.rust-lang.org registry.npmjs.org pypi.org files.pythonhosted.org",
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"CARGO_TARGET_DIR": "/workspace/.cache/cargo-target",
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"GIT_CONFIG_GLOBAL": "/home/vscode/.gitconfig.local",
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"COREPACK_ENABLE_DOWNLOAD_PROMPT": "0",
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"PYTHONDONTWRITEBYTECODE": "1",
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"PIP_DISABLE_PIP_VERSION_CHECK": "1"
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},
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"remoteEnv": {
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"OPENAI_API_KEY": "${localEnv:OPENAI_API_KEY}"
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},
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"postCreateCommand": "python3 /opt/post_install.py",
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"postStartCommand": "bash /opt/post_start.sh",
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"waitFor": "postStartCommand",
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"customizations": {
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"vscode": {
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"settings": {
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"terminal.integrated.defaultProfile.linux": "zsh",
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"terminal.integrated.profiles.linux": {
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"bash": {
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"path": "bash",
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"icon": "terminal-bash"
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},
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"zsh": {
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"path": "zsh"
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}
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},
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"files.trimTrailingWhitespace": true,
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"files.insertFinalNewline": true,
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"files.trimFinalNewlines": true
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},
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"extensions": [
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"openai.chatgpt",
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"rust-lang.rust-analyzer",
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"tamasfe.even-better-toml",
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"vadimcn.vscode-lldb",
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"ms-azuretools.vscode-docker"
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]
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}
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}
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}
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