OpenClaw has multiple E2E/test Dockerfiles that run all processes as root

Three Dockerfiles in scripts/docker/ and scripts/e2e/ lack a USER directive, meaning all processes run as uid 0 root. If any process is compromised, the attacker has root inside the container, making container breakout significantly easier. Partial fix 2026-02-08: Commit 28e1a65e added USER sandb...