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register-referentie/docs/runbooks/gitea-actions-gotchas.md
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refactor(infra): use upstream images verbatim, seed config via docker cp (refs #30)
Drops the inline-build images for the upstream services. The compose now
references the published images directly (openzaak/open-zaak,
openzaak/open-notificaties, keycloak, curl, flowable-rest) with no build for
them, and the config they need is streamed into external named volumes by
infra/seed-config.sh:

  rr-oz-config  -> oz-init     /app/setup_configuration   (data.yaml)
  rr-kc-realms  -> keycloak    /opt/keycloak/data/import   (realm exports)
  rr-fl-bpmn    -> flowable-init /work                     (registratie.bpmn)

How: the seeder creates each volume, `docker create`s a throwaway helper that
mounts it, `docker cp`s the files in, and removes it. docker cp streams over the
Docker API, so it works in Docker-in-Docker (the CI runner) where bind mounts
mount empty. It uses plain `docker create`/`cp` — NOT `docker compose create`,
which podman-compose (local dev) lacks. `external: true` fixed names keep the
volumes identical across docker compose and podman-compose.

Consequence: bare `docker compose up` no longer self-seeds, so use `make up`
(seeds then starts). Every `*-up` target seeds first; `*-down` removes the
external volume. acl/bff are still built (they're our apps, not upstream images).

Verified end-to-end on podman-compose: `make keycloak-up` seeds rr-kc-realms,
the upstream Keycloak mounts it, and --import-realm imports all four realms
(digid realm returns 200). Seeder runs in ~2s.

Docs updated: gitea-actions-gotchas.md, ci.md, openzaak.md.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-25 10:22:14 +02:00

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# Gitea Actions gotchas
Known differences between Gitea Actions (our CI) and a plain local run, and the
workarounds we adopted. Referenced by `CLAUDE.md` §8.7 and §15.
## Bind mounts don't reach Compose services on the hosted runner
**Symptom.** `make smoke` is green locally but the `compose-smoke` CI job fails
with the OpenZaak init container exiting 1:
```
oz-init-1 | CommandError: Yaml file `/app/setup_configuration/data.yaml` does not exist.
```
Migrations run fine; only the step that reads a **mounted** file fails. The same
class of failure hits any service that bind-mounts a workspace path —
`nrc-init` (its `data.yaml`), `flowable-init` (the BPMN), `keycloak` (the realm
import dir).
**Cause.** The `ubuntu-latest` runner executes the whole job **inside a
container** (`docker.gitea.com/runner-images:ubuntu-latest`). When the job then
runs `docker compose ... up`, Compose talks to the host's Docker daemon and
starts the stack as **sibling containers**. A relative bind mount such as
```yaml
volumes:
- ./openzaak/setup_configuration:/app/setup_configuration:ro
```
is resolved by Compose to an absolute path **inside the job container**
(`/workspace/eho/register-referentie/infra/openzaak/setup_configuration`). The
daemon then looks for that path on **its own host**, doesn't find it, and
auto-creates an **empty directory** to mount. The container starts with an empty
mount point, so the file appears "missing".
This is the classic Docker-in-Docker / sibling-container bind-mount trap. It does
not happen on a runner that executes jobs directly on the host (the previous
self-hosted `respellion-linux` setup), which is why switching to `ubuntu-latest`
exposed it.
**Fix: the upstream images are used verbatim (no build); config is streamed into
external named volumes with `docker cp`.** `infra/seed-config.sh` creates a fixed-
name volume per asset, runs a throwaway helper container that mounts it, and
`docker cp`s the files in. `docker cp` streams bytes over the Docker API, so it
works no matter where the daemon runs (including Docker-in-Docker). The services
then mount those volumes:
| Asset | External volume | Mounted by → at |
|---|---|---|
| OpenZaak `setup_configuration/data.yaml` | `rr-oz-config` | `oz-init``/app/setup_configuration` |
| Keycloak realm exports | `rr-kc-realms` | `keycloak``/opt/keycloak/data/import` |
| `workflows/registratie.bpmn` | `rr-fl-bpmn` | `flowable-init``/work` |
The volumes are declared `external: true` with fixed `name:`s so they resolve
identically under docker compose and podman-compose. The seed step (`make` runs
it before every `up`) recreates them fresh each time; `make down` / the
per-service `*-down` targets remove them. Open Notificaties needs no config at all
`nrc-init` runs migrations only.
**Two hard constraints drove this design:**
- Use plain `docker volume create` / `docker run` / `docker cp`**not**
`docker compose create`, which **podman-compose** (the local dev runtime) does
not implement.
- `docker cp` rather than a bind mount of the source dir, because that bind mount
is exactly what fails on the containerized runner.
**Consequence: bare `docker compose up` no longer self-seeds** — the `external`
volumes must be populated first, so use **`make up`** (or `make <svc>-up`), which
seeds then starts. CI uses `make smoke`, which does the same.
**Why not the alternatives.**
- *Bake into a (possibly inline) image* — clean and portable, but it's a build;
rejected here because the goal was to use the upstream images verbatim.
- *Compose `configs:` with inline `content`* — Compose materialises these as a
temp file on the **client** side and bind-mounts it → same daemon-can't-see-it
problem.
- *A self-hosted runner that runs jobs on the host* — bind mounts would then work
with zero seeding, but it reintroduces a bespoke runner and undoes the move to
the hosted `ubuntu-latest` label.
No bind mounts of these config files remain, so the SELinux `:z`/`:Z` relabel flag
is no longer needed anywhere in `infra/` (named volumes don't need relabeling).
## `--wait` fails on one-shot containers with no dependant
`docker compose up --wait` treats a service that **exits** as a failure of the
"stay up" condition — **unless** another service depends on it with
`condition: service_completed_successfully`. Our init jobs `oz-init` and
`nrc-init` are fine (`openzaak`/`nrc-web` depend on their completion), but
`flowable-init` deploys the BPMN and exits 0 with **no dependant**, so a
whole-project `--wait` fails the moment it exits — even with everything else
healthy. The symptom is a `compose-smoke` failure whose last compose line is:
```
container infra-flowable-init-1 exited (0)
```
**Fix.** The smoke does **not** `--wait` on the whole project. It starts
everything with `up -d`, then `up -d --wait <services>` only for the durable,
health-checked services (`openzaak nrc-web acl bff` — see `WAIT_SVCS` in the
`Makefile`). One-shots still run (and deploy), they just don't gate `--wait`.
This also removed the old external `curl http://localhost:8080/health` check:
the CI job runs in a container and **can't reach published host ports** at
`localhost`, and the per-service healthchecks (which run *inside* the
containers) already prove readiness, so `--wait` succeeding *is* the smoke.
## `--wait` needs an explicit timeout
`docker compose up --wait` defaults to a 60-second timeout in some Compose v2
releases. A cold OpenZaak migrate alone takes ~50 s, so the smoke target passes
`--wait-timeout 300` (see `Makefile`). The 3-minute Definition-of-Done budget
still holds — this just stops `--wait` giving up before the stack is healthy.
## PostGIS readiness vs. `pg_isready`
`pg_isready` reports the server is accepting connections as soon as the TCP port
is open — **before** the `postgis/postgis` image has finished running its
`CREATE EXTENSION postgis` init scripts. An init container that starts migrating
in that window can fail on a missing PostGIS. The db healthchecks therefore add a
`SELECT PostGIS_Version()` probe so dependents wait for the extension, not just
the port.