Inside the published Docker image, both the `--tui` banner and the
dashboard-embedded TUI report `1 commit behind — run docker pull
nousresearch/hermes-agent:latest to update` even though the container
has no git repo and no way to compute a commit delta.
Root cause: two independent update-detection paths, only one of which
knows it's running in Docker.
- `recommended_update_command()` → `detect_install_method()` reads the
`.install_method` stamp that `docker/stage2-hook.sh` writes at boot →
returns "docker", so the *command string* correctly says `docker pull`.
- `banner.check_for_updates()` (the source of the "N commits behind"
*count*) has no notion of the docker install method. It only detects a
build via `HERMES_REVISION` (nix-only, unset in the image) or a `.git`
dir (excluded from the image by .dockerignore). Neither matches, so it
silently falls through to `check_via_pypi()`, whose PyPI-version
mismatch flag (1) is then rendered verbatim by the CLI banner
(build_welcome_banner), the Ink TUI badge (branding.tsx), and `hermes
version` as "1 commit behind" — a phantom count, no commit math
involved. `hermes update` already refuses to run in-place in the
container.
The dashboard's REST `/api/hermes/update/check` endpoint already
short-circuits docker (returns behind=None + the docker guidance). This
mirrors that guard inside `check_for_updates()` so the banner/TUI/version
surfaces agree: when `detect_install_method() == "docker"`, return None
before any git/pypi probe (and before writing a cache entry). None makes
the render guards (`typeof === 'number' && > 0`, `behind and behind > 0`)
stay false, so the badge/line disappears entirely — matching the System
page.
Fix is in one place (check_for_updates) because all three consumers route
through it via get_update_result()/_update_result.
Tests: test_check_for_updates_docker_returns_none asserts None + no
git/pypi probe + no cache write; test_check_for_updates_non_docker_still_checks
guards against over-broadening (pip still version-checks). Mutation-tested:
removing the guard fails the docker test.
Verified against a real `docker build` of the image — see PR description.
b1e399de95