# Auditor image: a disposable environment holding two coding agents (opencode, # Codex CLI) plus a deterministic security toolchain. No host credentials are # baked in; the one secret reaching a running container is the credential of # the harness that lane runs, mounted at runtime (see harness.sh). # # Everything that needs the network is fetched HERE, at build time, where the # daemon has normal egress. At RUN time the container sits on an internal # network whose only exit is the allowlist proxy, so the scanners must be # fully offline: hence the baked Go vulnerability database and semgrep rules. # 1.27.1 to match the project's go.mod directive (staticcheck needs 1.26+; # GOTOOLCHAIN=local, so the base version is the version you get. FROM golang:1.27.1-bookworm RUN apt-get update && apt-get install -y --no-install-recommends \ git ripgrep ca-certificates curl unzip jq python3 python3-venv \ && rm -rf /var/lib/apt/lists/* # opencode via the vendor install script (a platform binary, so no Node runtime). RUN curl -fsSL https://opencode.ai/install | bash # GOPATH is /go in the official images, so `go install` lands in /go/bin. # Login shells reset PATH from /etc/profile, so the tools are also symlinked # into /usr/local/bin below — never rely on this ENV alone. ENV PATH="/root/.opencode/bin:/go/bin:${PATH}" # Go security tooling. # gosec — Go-specific insecure patterns (G1xx-G7xx), fully offline # govulncheck — known CVEs filtered by symbol-level reachability # staticcheck — correctness bugs (nil derefs, races) behind security bugs # gitleaks — committed secrets RUN go install github.com/securego/gosec/v2/cmd/gosec@latest \ && go install golang.org/x/vuln/cmd/govulncheck@latest \ && go install honnef.co/go/tools/cmd/staticcheck@latest \ && go install github.com/zricethezav/gitleaks/v8@latest \ && ln -s /go/bin/gosec /go/bin/govulncheck /go/bin/staticcheck /go/bin/gitleaks \ /usr/local/bin/ # semgrep plus its rule corpus, cloned for offline use (--config auto would # hit the registry and report the project URL upstream; we never use it). RUN python3 -m venv /opt/semgrep \ && /opt/semgrep/bin/pip install --no-cache-dir --quiet semgrep \ && ln -s /opt/semgrep/bin/semgrep /usr/local/bin/semgrep \ && git clone --depth 1 https://github.com/semgrep/semgrep-rules /opt/semgrep-rules # Offline Go vulnerability database: any file:// directory implements the API, # so govulncheck runs with no network at all. RUN curl -sL https://vuln.go.dev/vulndb.zip -o /tmp/vulndb.zip \ && mkdir -p /opt/vulndb \ && unzip -q /tmp/vulndb.zip -d /opt/vulndb \ && rm /tmp/vulndb.zip # Bake the project's module cache so govulncheck and staticcheck can load # packages with no network at run time. prepare.sh exports .code/ before it # builds, so these files are present in the build context. COPY .code/go.mod .code/go.sum /build/ RUN cd /build && go mod download # Codex CLI, pinned to the version signed in on the host (`codex --version`): # the server hands each client version its own model list, so the slugs and # reasoning levels the host shows are the ones this build gets. Two static # musl binaries are taken from the npm platform package: codex itself and the # code-mode host it spawns beside itself to run the model's commands (without # it every tool call fails closed). The package's voice, zsh and bubblewrap # resources serve the interactive sandbox, not a container. Last layer on # purpose: a version bump rebuilds nothing above it. ARG CODEX_VERSION=0.155.1 ARG TARGETARCH RUN arch="${TARGETARCH:-$(dpkg --print-architecture)}" \ && case "$arch" in \ amd64) npm_arch=x64; triple=x86_64-unknown-linux-musl ;; \ arm64) npm_arch=arm64; triple=aarch64-unknown-linux-musl ;; \ *) echo "no Codex CLI build for $arch" >&2; exit 1 ;; \ esac \ && curl -fsSL "https://registry.npmjs.org/@openai/codex/-/codex-${CODEX_VERSION}-linux-${npm_arch}.tgz" \ | tar -xz -C /usr/local/bin --strip-components=4 \ "package/vendor/$triple/bin/codex" "package/vendor/$triple/bin/codex-code-mode-host" \ && codex --version # A Node runtime, for the Codex Security plugin's MCP server (a Node bundle # that a codex lane ships in its CODEX_HOME; see harness.sh). Only the # binary; the launcher finds it on PATH. ARG NODE_VERSION=24.10.0 RUN arch="${TARGETARCH:-$(dpkg --print-architecture)}" \ && case "$arch" in amd64) node_arch=x64 ;; arm64) node_arch=arm64 ;; esac \ && curl -fsSL "https://nodejs.org/dist/v${NODE_VERSION}/node-v${NODE_VERSION}-linux-${node_arch}.tar.gz" \ | tar -xz -C /usr/local/bin --strip-components=2 "node-v${NODE_VERSION}-linux-${node_arch}/bin/node" \ && node --version ENV SEMGREP_SEND_METRICS=off WORKDIR /src CMD ["opencode", "--version"]