HealthLog/docs/ops/deploy.md

Deploy ordering

Coolify handles the standard deploy ordering automatically: the container image is pulled, docker-entrypoint.sh runs prisma migrate deploy against the live database, and only then does the Next.js process bind to the listener. This page documents the ordering explicitly for manual-rollback and partial-deploy scenarios where the operator drives the steps by hand.

Migration ordering

Migrations land before the new app container takes traffic. The canonical command sequence on a single-instance host:

# 1. Pull the new image.
docker pull ghcr.io/mbombeck/healthlog:vX.Y.Z

# 2. Run migrations against the live DB using the new image. The
#    production image strips pnpm/npm; use the entrypoint's node
#    invocation of the bundled Prisma CLI instead.
docker run --rm --env-file .env.production \
  ghcr.io/mbombeck/healthlog:vX.Y.Z \
  sh -c 'NODE_PATH=/opt/prisma-cli/node_modules node /opt/prisma-cli/node_modules/prisma/build/index.js migrate deploy'

# 3. Recreate the app container so it picks up the new image.
docker compose up -d app

The entrypoint also runs prisma migrate deploy on container boot, so step 2 is redundant in normal Coolify flow. It's listed explicitly for the manual case so an operator can verify the migration result before flipping traffic.

v1.11.0 notes

Migrations 0110–0114 are additive (new tables / columns for the WHOOP provider hub, the longitudinal coach, and the clinician FHIR record). They require no special steps — prisma migrate deploy runs them in order on boot like any other.

WHOOP introduces two optional instance env vars, WHOOP_REDIRECT_URI and WHOOP_WEBHOOK_SECRET (HMAC secret for WHOOP webhook signature verification). Per-user WHOOP client id/secret live in Settings, not in the environment. See docs/integrations/whoop.md. The shipped docker-compose.yml already whitelists both under environment:; only a forked or older compose file needs them added by hand, since vars not on the whitelist never reach the container.

What goes wrong if you reverse it

If the new app container starts before migrations run, the legacy schema is missing the columns / indexes / enum values the new code expects. Symptoms: Prisma client throws P2022 column does not exist on the first query that touches the new shape, the request path 500s, and the dispatcher logs fill with the same error until the migration catches up. Health checks usually keep the container marked "healthy" because /api/version doesn't exercise the affected tables — so a naïve load balancer will happily route real traffic into the broken shell.

Rollback

Rolling back migrations is generally one-way. Prisma's migration history table tracks applied migrations by hash; the down step is not auto-generated and most HealthLog migrations are forward-only (column drops, enum additions, index rebuilds). If a release has to roll back:

1. Roll back the app container to the previous image tag.
2. Leave the database schema at the newer migration. The previous app version reads forward-compatible-ish shapes for nearly every release pair shipped on the v1.4.x line.
3. If a column-drop migration ships in the rollback target, hand-roll the column back via a fresh forward migration (pnpm prisma migrate dev --create-only --name vX_Y_Z_rollback_<col>), edit the SQL, commit, and re-deploy. Never migrate resolve --rolled-back against production unless you've taken a fresh pg_dump first.

Verify the served version

The queued-deploy status is not the source of truth — the version /api/version actually answers is. A BuildKit layer-cache hit can re-ship the prior image even when Coolify reports a clean deploy, so always confirm the served build after a deploy:

# Asserts prod + demo serve 1.9.0, prints each target's buildSha,
# exits non-zero on a mismatch or timeout after a bounded retry loop.
pnpm dlx tsx scripts/assert-deploy.ts 1.9.0

Pass --only=prod / --only=demo to check a single target, or --attempts=N --interval=ms to widen the retry window while a slow pull settles.

Verify the image signature

Every release image (the multi-arch manifest index, covering both amd64 and arm64) is signed keyless via Sigstore in the docker-publish.yml merge job: GitHub's OIDC token is exchanged for a short-lived Fulcio certificate bound to the workflow identity, and the signature lands in the Rekor transparency log. There is no long-lived signing key to leak or rotate.

Verify before (or after) a deploy with cosign:

cosign verify \
  --certificate-oidc-issuer https://token.actions.githubusercontent.com \
  --certificate-identity-regexp 'https://github.com/MBombeck/HealthLog/\.github/workflows/docker-publish\.yml@refs/tags/v.*' \
  ghcr.io/mbombeck/healthlog:1.16.4

A passing verification proves the image was built by this repository's release workflow on a v* tag — not by anyone who merely obtained push access to the GHCR package.

Prefer digest-pinned deploys

Tags (:latest, :1.16.4) are mutable aliases: a registry-side compromise or an accidental re-push can repoint them. The digest is the image's only immutable identity, and it is what the signature actually covers. For any deploy where supply-chain integrity matters more than convenience:

The compose file carries the hook for this: the app service image is ghcr.io/mbombeck/healthlog${HEALTHLOG_IMAGE_REF:-:latest}. Unset, the day-to-day :latest + pull_policy: always flow stays the documented default for self-hosters. Set HEALTHLOG_IMAGE_REF in the compose .env (or the deployment platform's env vars) to switch the reference without touching the file:

• HEALTHLOG_IMAGE_REF=:v1.16.5 — pin to a release tag (still mutable).
• HEALTHLOG_IMAGE_REF=@sha256:<digest> — pin to the immutable digest.

Bumping a digest pin by hand

A digest-pinned instance never follows a release on its own — an image promote does not touch the pin, so moving it is part of shipping. The mechanic, end to end:

1. Resolve the new release's digest from the registry (the manifest-list digest, which covers both architectures):

   docker buildx imagetools inspect ghcr.io/mbombeck/healthlog:v1.37.20 \
     | grep -m1 Digest
   

2. Set HEALTHLOG_IMAGE_REF=@sha256:<that digest> where the compose environment lives — the .env next to the compose file, or the deployment platform's env vars for the app service.

3. Deploy as usual.

4. Verify /api/version on the target — and verify it three times a few seconds apart, not once: during the container swap a single probe can be answered by the outgoing container (or a cache) and read as success while the old release keeps running. Three stable answers reporting the shipped version + buildSha are the signal; a deploy that finishes suspiciously fast (under ~30 s) is a warning that nothing was actually pulled.

A pin is sticky, and a stale pin is silent. Once set, every later deploy ships that reference until someone changes it. The deploy still reports success, the tag still builds, the image still publishes, and the running instance stays on the old release. If you pin, bumping the pin is part of shipping, not an afterthought. If you would rather not carry that step, leave the variable unset: docker-publish.yml rotates :latest on every release tag without a pre-release suffix, so the git tag stays the single place a version is declared.

Two checks after any deploy, because the first alone can be served from a cache: /api/version must report the version and commit you shipped, and the running container's image must be the one you expect (docker inspect <container> --format '{{.Config.Image}}'). A deploy that finishes suspiciously fast is a signal rather than good news. Also watch for a DUPLICATE HEALTHLOG_IMAGE_REF entry: Coolify accepts two rows with the same key without warning, and which one wins is not defined.

Promote a release to a pinned digest

scripts/promote-digest.ts automates the whole promotion after docker-publish.yml has pushed a tag:

pnpm dlx tsx scripts/promote-digest.ts v1.16.5

It resolves the multi-arch index digest from the GHCR registry API (anonymous pull token, no docker daemon), verifies the keyless cosign signature against the workflow identity (fails closed — no cosign, no promotion), and prints the resulting HEALTHLOG_IMAGE_REF=@sha256:… value.

For a Coolify-managed deployment it can also apply the pin. Two facts about Coolify shape the mechanism (verified against the Coolify OpenAPI spec and a live instance):

• For a git-based "Docker Compose" application, Coolify re-reads the compose file from the repository checkout on every deploy. docker_compose_raw is its stored copy of that file, and the application-update API (PATCH /api/v1/applications/{uuid}) does not accept the field — editing the stored compose is neither possible via API nor durable.
• Application env vars are durable, exposed via the documented /api/v1/applications/{uuid}/envs endpoints, and interpolated into the compose at deploy time.

So the pin travels as the HEALTHLOG_IMAGE_REF env var. With COOLIFY_API_TOKEN, COOLIFY_API_URL and COOLIFY_APP_UUID in the environment the script creates/updates the var itself (add PROMOTE_DEPLOY=1 to also trigger the redeploy); without a token it prints the equivalent curl commands:

curl -sS -X PATCH "https://<coolify-host>/api/v1/applications/<app-uuid>/envs" \
  -H "Authorization: Bearer <token>" -H "Content-Type: application/json" \
  -d '{"key":"HEALTHLOG_IMAGE_REF","value":"@sha256:<digest>"}'

curl -sS "https://<coolify-host>/api/v1/deploy?uuid=<app-uuid>" \
  -H "Authorization: Bearer <token>"

After the deploy settles, confirm /api/version reports the released version + buildSha on every target (see above).

Rollback: re-run the script with the previous tag (or PATCH the env var back to the previous digest / to empty for :latest) and redeploy. Digest pinning trades the automatic :latest pickup for determinism — a pinned instance only moves when the var moves, so the promotion step becomes part of the release routine, not an optional extra.

Digest pinning is the recommended hardening for operators with a threat model that includes the registry; :latest remains the low-friction default.

Deploy-status webhook: replay protection

POST /api/internal/deploy-webhook authenticates via the static X-Deploy-Webhook-Secret header. Since v1.16.4 it additionally enforces a freshness window: a request carrying an X-Deploy-Webhook-Timestamp header (unix seconds, unix milliseconds, or ISO-8601) is rejected with 401 {"status":"stale"} when the timestamp lies more than 5 minutes from server time — so a captured request cannot be replayed later to re-page admins or forge deploy outcomes in the audit log.

Two modes:

• Default (tolerant). Requests without the header pass — Coolify's stock notification sender does not attach one. A header that is present but stale or unparseable is always rejected.

• Strict. Set DEPLOY_WEBHOOK_REQUIRE_TIMESTAMP=true in the app environment to make the header mandatory, closing the replay window completely. Use this when the sender (or a reverse proxy in front of the app) can attach the timestamp, e.g.:

  curl -X POST https://<host>/api/internal/deploy-webhook \
    -H "X-Deploy-Webhook-Secret: $SECRET" \
    -H "X-Deploy-Webhook-Timestamp: $(date +%s)" \
    -H "Content-Type: application/json" \
    -d '{"status":"success"}'