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k.denisov 64c222a084 opencode-sandbox: OpenCode 2 in a sandbox for any project
Runs OpenCode 2 with full permissions while containing its mistakes:

- egress filter: squid in a container per project; squid.conf is rendered
  from layered egress.conf files (package, user, project, local) with
  allow/block/connect rules and expect-pass/expect-block self-tests
- netlock: nftables rejects direct egress for the opencode-sandbox group
  (installed once with sudo as a systemd unit)
- bubblewrap: read-only host, writable project, worktrees and state;
  credentials hidden; ssh keys via the host's ssh-agent; session bus
  replaced by an xdg-dbus-proxy limited to notifications; no permission
  prompts (sudo and systemd-run denied); refuses to run unsandboxed
- per-project state in ~/.local/share/opencode-sandbox/<name>
- worktrees: `wt add|rm|list` with project hooks
- skills mounted per project; the opencode-sandbox skill explains the
  environment to the agent
- plugins as submodules: context-panel, skill-compact-resurrect;
  global config adds opencode-notifier and cc-safety-net
- README in English and Russian
2026-10-30 01:00:02 -07:00

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#!/bin/sh
set -eu
mkdir -p /var/log/squid
touch /var/log/squid/access.log
chown squid:squid /var/log/squid/access.log
# /tmp survives a container restart: a stale PID file makes squid refuse to start
rm -f /tmp/squid.pid
# Audit log to `docker logs` (squid writes access_log only as cache_effective_user)
tail -F /var/log/squid/access.log &
exec squid -N -f /etc/opencode-sandbox/squid.conf