- frontend prod: USER root for adduser, then USER appuser (1001:1001); fixes
build failure caused by nginx-unprivileged already setting USER nginx
- docker-compose: frontend user updated to 1001:1001 (was 101:101)
- CLAUDE.md: add infrastructure change protocol (update README + test both
stacks after any Dockerfile/compose/nginx change); fix stale passlib ref
- README: container table shows nginx-unprivileged image, UID column, internal
port 8080 note; Current State notes all containers run as non-root
Both dev and prod stacks tested and verified (health, login, /users/me,
frontend serving, all containers confirmed non-root via docker inspect).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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