# Deployment

## Prerequisites

- Docker + Docker Compose
- Reverse proxy (Caddy, Nginx, Traefik) for TLS termination
- At least one configured AI provider (LiteLLM / OpenRouter / Bedrock / Azure)

## What the image carries

Beyond Node, the runtime image installs a few tools that document export depends
on. They are in `Dockerfile` and worth knowing about before trimming it:

| | For |
|---|---|
| `pandoc-cli` | the fallback for Word export when the renderer cannot run |
| `python3`, `py3-lxml`, `py3-pillow` | the slide renderer. Both libraries are C extensions with no Alpine wheels, so they come from apk rather than pip — installing them from source would mean carrying a compiler in the runtime image |
| `python-pptx==1.0.2`, `python-docx==1.1.2` (pip) | build the decks and the documents. Pinned: unpinned, a rebuild from the same commit could produce different output |
| `poppler-utils` | `pdftoppm`, which turns a rendered deck into one image per slide so a vision model can see it. Only needed when slide review is switched on |
| `ffmpeg`, `curl`, `jq` | audio handling and entrypoint scripting |

Roughly 58MB of that is Python. PDF conversion is **not** in the image — it goes
to Gotenberg over the network (`GOTENBERG_URL`, default `http://gotenberg:3000`),
so PowerPoint and Word still work when Gotenberg is down and only PDF fails.

See [my-resources.md](my-resources.md) for what the renderer does.

## Images

| Image | Role |
|---|---|
| `danielonyejesi/pediatric-ai-scribe-v3:latest` | App container. Published by CI on every tag push where configured. Pull directly or build from source. |
| `pgvector/pgvector:pg16` | Database. |
| `redis:7-alpine` | Operational Redis cache/state. |

## Build from source

```bash
git clone https://github.com/ifedan-ed/pediatric-ai-scribe-v3.git
cd pediatric-ai-scribe-v3
cp .env.example .env
# edit .env — required: APP_URL, JWT_SECRET, DATA_ENCRYPTION_KEY, DB_PASSWORD, an AI provider
./scripts/build-image.sh
REV=$(git rev-parse HEAD)
scripts/deploy.sh "ped-ai-local:$REV" "$REV"
```

**Use `scripts/deploy.sh`. Do not run `docker compose up` by hand.**

Building is not deploying. `docker compose` takes its image from
`PED_AI_IMAGE` in `.env`, and `build-image.sh` does not move that pin — naming a
revision is also how a rollback is done. So a pin left behind by an earlier
deploy starts *that* image, and every signal still reports success: the build
completes, `up` says the container started, and `/api/health` returns
`{ok:true}` from the wrong revision. This has happened: a stale pin silently
reverted the app by 31 commits, removing a feature, and the missing feature was
reported as a new bug.

`scripts/deploy.sh <image-ref> [expected-revision]` is what closes that gap:

1. pulls the image if it is not local, and refuses to tear anything down until
   it exists;
2. records what is serving now, so there is something to go back to;
3. moves the `PED_AI_IMAGE` pin, so a later plain `docker compose up` brings up
   the same image rather than reverting;
4. waits for the container to become healthy;
5. asks `/api/build` which revision is *actually* serving and compares it to the
   expected one — catching a stale tag, a cached layer, or a rollback that never
   took;
6. rolls back to the previous image if either check fails.

`build-image.sh` prints the exact `deploy.sh` line to run whenever the pin does
not match the revision it just built.

The build uses Node 24 LTS and `npm ci --omit=dev` from the root lockfile.
`./scripts/build-image.sh` resolves the full checkout Git commit (including
worktrees/packed refs) and passes `GIT_REVISION` through Compose. It only builds;
starting or replacing production services remains a separate reviewed step.
Use `COMPOSE_FILE=docker-compose.local.yml ./scripts/build-image.sh` for the local
variant. For direct Docker builds:

```bash
docker build --build-arg GIT_REVISION="$(git rev-parse --verify 'HEAD^{commit}')" -t ped-ai-local:latest .
```

All Compose variants accept the same `GIT_REVISION` environment variable. A build without one is explicitly
`unknown` (unversioned development), not a release provenance claim.

The Dockerfile rejects malformed revisions and writes the same full SHA to
`/app/BUILD_ID` and `org.opencontainers.image.revision`. `/api/build`, the
`X-Build-Id` header and asset query strings use that baked value. Git identifies
the source commit, not local uncommitted changes: release from a clean checkout;
a local dirty test image is not an exact representation of that commit.

Forgejo's existing trusted push/manual release workflows run a Node 24 root
`npm ci` / `npm test` job on `forgejo-local`; APK and Docker jobs require it via
`needs`. No untrusted pull-request code may run on that privileged runner.
An isolated, unprivileged Forgejo PR runner is separate future provisioning,
not an assumed label in these workflows. GitHub-hosted PR CI uses Node 24;
GitHub release workflows also gate builds on root tests. Mobile dependency
versions and signing/publishing gates are unchanged.

The default compose starts `pediatric-ai-scribe` on `127.0.0.1:3552`, `pedscribe-db` internally, and `ped-ai-redis` internally.

## Minimum `.env`

```env
APP_URL=https://scribe.example.com
JWT_SECRET=<openssl rand -hex 32>
DATA_ENCRYPTION_KEY=<openssl rand -hex 32>
DB_PASSWORD=<strong password>

AI_PROVIDER=litellm
LITELLM_API_BASE=https://llm.example.com
LITELLM_API_KEY=sk-...
```

Full variable reference: `docs/configuration.md`.

## Reverse proxy

App binds to `127.0.0.1:3552` only. TLS termination + host routing is the
proxy's job.

### Caddy

```
scribe.example.com {
    reverse_proxy localhost:3552
}
```

### Nginx

```nginx
server {
    listen 443 ssl http2;
    server_name scribe.example.com;
    ssl_certificate     /etc/ssl/certs/scribe.example.com.pem;
    ssl_certificate_key /etc/ssl/private/scribe.example.com.key;
    client_max_body_size 100M;
    location / {
        proxy_pass http://127.0.0.1:3552;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }
}
```

App sets `trust proxy: 1` so rate limiting uses the original client IP.

## Volumes

| Volume | Contents | Backup priority |
|---|---|---|
| `pgdata` | All user data, encounters, memories, audit logs, settings | Critical |
| `scribe-logs` | Filesystem audit log files (JSONL by day) | High for compliance evidence; Postgres also has audit/API/access tables |

### Postgres backup / restore

```bash
# Backup
docker exec pedscribe-db pg_dump -U pedscribe pedscribe > backup.sql

# Restore
cat backup.sql | docker exec -i pedscribe-db psql -U pedscribe pedscribe
```

## Updating

### From a Docker Hub pull

```bash
docker compose pull
docker compose up -d
```

### Building from source

```bash
git pull
./scripts/build-image.sh --no-cache
docker compose up -d
```

On startup the container runs `initDatabase()` (idempotent baseline), then
`node-pg-migrate` applies any new migration files. Collation-drift check auto-
REINDEXes if the ICU library version changed between image builds.

## Health

| Endpoint | Purpose |
|---|---|
| `GET /api/health` | `{ok:true}` — public, used by Docker health check |
| `GET /api/health/detailed` | Provider status — admin-auth required |
| `GET /api/build` | Build ID (short git SHA) — useful for debugging cache invalidation |
| `GET /metrics` | Prometheus metrics in text exposition format |

Docker health check in `Dockerfile`: every 30 s, wget-spiders `/api/health`.
Container marked unhealthy after 5 failures.

## Resource footprint

- RAM: 256 MB minimum, 512 MB recommended for one instance with a handful of concurrent users.
- Disk: Postgres size scales with audit log retention, saved encounters, and documents.
- CPU: idle load negligible; AI calls are network-bound on the LLM provider side.

## Production checklist

- `JWT_SECRET` ≥ 32 bytes (`openssl rand -hex 32`)
- `DATA_ENCRYPTION_KEY` exactly 64 hex chars
- `DB_PASSWORD` non-default
- `APP_URL` = public URL (enables fail-closed CORS + HSTS + secure cookies)
- HIPAA workload → use Bedrock or Azure OpenAI directly, or a LiteLLM gateway pointed at a BAA-eligible upstream. Not OpenRouter.
- SMTP configured for verification + reset emails
- Turnstile keys set for public-facing deployments
- Reverse proxy serves valid TLS certs
- Postgres dump scheduled off-host
- Log retention and backup policy covers `audit_log`, `api_log`, `access_log`, and filesystem `scribe-logs`

## CI / CD

On push (and tag push), these workflows run (depending on runner/site):

| Workflow | Output | Runtime |
|---|---|---|
| `docker-publish.yml` | Multi-arch image (amd64 + arm64 via native runners) on Docker Hub | ~4 min |

Triggered by `auto-version.yml` (reads commit messages, bumps + tags via
`RELEASE_PAT`) or manually via `Actions → Version bump & release` or
`scripts/release.sh X.Y.Z --push`.

## Ports

| Service | Internal | External default |
|---|---|---|
| App | 3000 | 127.0.0.1:3552 |
| Postgres | 5432 | not exposed |
| Redis | 6379 | not exposed |

Change the app's external port by editing the `ports:` mapping in
`docker-compose.yml`.

## Log destinations

1. Container stdout (`docker compose logs -f pediatric-scribe`).
2. Filesystem `data/logs/YYYY-MM-DD.log` (JSONL, one line per event).
3. Postgres tables `audit_log`, `api_log`, `access_log` — batched writes
   via `src/utils/auditQueue.js`, drained on SIGTERM.
4. Loki (if `LOKI_URL` set) — pushed fire-and-forget per event.

A central Prometheus/Loki/Grafana stack can also scrape `GET /metrics` and collect Docker logs with Promtail. Keep direct Loki push enabled only for structured application events that are useful for compliance and operations.

## Auto-cleanup

| Target | Policy | Frequency |
|---|---|---|
| `saved_encounters` | Delete where `expires_at < NOW()`. Default 7 days (configurable via `site.auto_delete_days`). | Hourly + 10 s after startup |
| `audio_backups` | Delete where `expires_at < NOW()` (24 h default). | Same schedule |

## Graceful shutdown

`server.js` handles `SIGTERM` and `SIGINT`:

1. Close HTTP listener (new connections refused, in-flight finish).
2. Drain `src/utils/auditQueue.js` (flush any pending audit/api/access writes).
3. `pool.end()` — close Postgres pool cleanly.

9-second hard deadline — Docker sends `SIGKILL` after 10 s by default. Prevents
in-flight note writes from being truncated on `docker restart`.