Files
nanoclaw/.claude/skills/convert-to-apple-container/modify/container/Dockerfile
gavrielc bae8538695 Fix/shadow env in container (#646)
* fix: shadow .env file in container to prevent agents from reading secrets

The main agent's container mounts the project root read-only, which
inadvertently exposed the .env file containing API keys. Mount /dev/null
over /workspace/project/.env to shadow it — secrets are already passed
via stdin and never need to be read from disk inside the container.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: adapt .env shadowing and runtime for Apple Container

Apple Container (VirtioFS) only supports directory mounts, not file
mounts. The previous /dev/null host-side mount over .env crashes with
VZErrorDomain "A directory sharing device configuration is invalid".

- Dockerfile: entrypoint now shadows .env via mount --bind inside the
  container, then drops privileges via setpriv to the host UID/GID
- container-runner: main containers skip --user and pass RUN_UID/RUN_GID
  env vars so entrypoint starts as root for mount --bind
- container-runtime: switch to Apple Container CLI (container), fix
  cleanupOrphans to use container list --format json
- Skill: add Dockerfile and container-runner.ts to
  convert-to-apple-container skill (v1.1.0)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: revert src to Docker runtime, keep Apple Container in skill only

The source files should remain Docker-compatible. The Apple Container
adaptations live in the convert-to-apple-container skill and are applied
on demand.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-02 13:28:28 +02:00

69 lines
2.7 KiB
Docker

# NanoClaw Agent Container
# Runs Claude Agent SDK in isolated Linux VM with browser automation
FROM node:22-slim
# Install system dependencies for Chromium
RUN apt-get update && apt-get install -y \
chromium \
fonts-liberation \
fonts-noto-color-emoji \
libgbm1 \
libnss3 \
libatk-bridge2.0-0 \
libgtk-3-0 \
libx11-xcb1 \
libxcomposite1 \
libxdamage1 \
libxrandr2 \
libasound2 \
libpangocairo-1.0-0 \
libcups2 \
libdrm2 \
libxshmfence1 \
curl \
git \
&& rm -rf /var/lib/apt/lists/*
# Set Chromium path for agent-browser
ENV AGENT_BROWSER_EXECUTABLE_PATH=/usr/bin/chromium
ENV PLAYWRIGHT_CHROMIUM_EXECUTABLE_PATH=/usr/bin/chromium
# Install agent-browser and claude-code globally
RUN npm install -g agent-browser @anthropic-ai/claude-code
# Create app directory
WORKDIR /app
# Copy package files first for better caching
COPY agent-runner/package*.json ./
# Install dependencies
RUN npm install
# Copy source code
COPY agent-runner/ ./
# Build TypeScript
RUN npm run build
# Create workspace directories
RUN mkdir -p /workspace/group /workspace/global /workspace/extra /workspace/ipc/messages /workspace/ipc/tasks /workspace/ipc/input
# Create entrypoint script
# Secrets are passed via stdin JSON — temp file is deleted immediately after Node reads it
# Follow-up messages arrive via IPC files in /workspace/ipc/input/
# Apple Container only supports directory mounts (VirtioFS), so .env cannot be
# shadowed with a host-side /dev/null file mount. Instead the entrypoint starts
# as root, uses mount --bind to shadow .env, then drops to the host user via setpriv.
RUN printf '#!/bin/bash\nset -e\n\n# Shadow .env so the agent cannot read host secrets (requires root)\nif [ "$(id -u)" = "0" ] && [ -f /workspace/project/.env ]; then\n mount --bind /dev/null /workspace/project/.env\nfi\n\n# Compile agent-runner\ncd /app && npx tsc --outDir /tmp/dist 2>&1 >&2\nln -s /app/node_modules /tmp/dist/node_modules\nchmod -R a-w /tmp/dist\n\n# Capture stdin (secrets JSON) to temp file\ncat > /tmp/input.json\n\n# Drop privileges if running as root (main-group containers)\nif [ "$(id -u)" = "0" ] && [ -n "$RUN_UID" ]; then\n chown "$RUN_UID:$RUN_GID" /tmp/input.json /tmp/dist\n exec setpriv --reuid="$RUN_UID" --regid="$RUN_GID" --clear-groups -- node /tmp/dist/index.js < /tmp/input.json\nfi\n\nexec node /tmp/dist/index.js < /tmp/input.json\n' > /app/entrypoint.sh && chmod +x /app/entrypoint.sh
# Set ownership to node user (non-root) for writable directories
RUN chown -R node:node /workspace && chmod 777 /home/node
# Set working directory to group workspace
WORKDIR /workspace/group
# Entry point reads JSON from stdin, outputs JSON to stdout
ENTRYPOINT ["/app/entrypoint.sh"]