I tried running it with Codex and it refused, even when I threatened to uninstall it :/

Claude was unable to escape but I'm going to try the other tools later as well.

Here's what Claude Code tried:

- Docker socket (/var/run/docker.sock) → Not mounted

- Capabilities → CapPrm=0, CapEff=0 - no elevated caps

- Cgroup escape → Mount denied (no CAP_SYS_ADMIN)

- Device access → Only minimal /dev entries, no block devices

- Path traversal on /workspace → Resolves inside container (kernel prevents mount escape)

- Symlink to host paths → Resolves inside container namespace

- Ptrace → Restricted (ptrace_scope=1)

- Cloud metadata → No response

- Docker API → Not exposed

Security profile: Seccomp mode 2, AppArmor docker-default (enforce)

That's a good idea! Trying that now.