galaxy-game/tools/dev-deploy/README.md

# `tools/dev-deploy/` — long-lived Galaxy dev environment

A docker-compose stack that runs the Galaxy backend, gateway, supporting
services, and a small Caddy in front of them, reachable through the host
Caddy at `https://www.galaxy.lan` and `https://api.galaxy.lan`. Used by
the `dev-deploy.yaml` Gitea Actions workflow as the canonical dev target
on every merge into the `development` branch, and runnable by hand
through this Makefile for local debugging of the deploy plumbing
itself.

This stack is **not** the developer's primary playground for UI work —
that role still belongs to [`tools/local-dev/`](../local-dev/README.md),
which is faster (Vite HMR, host-side dev server) and isolated to one
developer. The two stacks coexist on the same host because every name
is distinct:

|                  | `tools/local-dev/`           | `tools/dev-deploy/`         |
|------------------|------------------------------|-----------------------------|
| Compose project  | `local-dev`                  | `galaxy-dev`                |
| Container prefix | `galaxy-local-dev-*`         | `galaxy-dev-*`              |
| Network          | `galaxy-local-dev-net`       | `galaxy-dev-internal`, `edge` |
| Volumes          | `galaxy-local-dev-*`         | `galaxy-dev-*`              |
| Host ports       | 5433/6380/8025/8080/9090     | none (only `edge` network)  |
| Game state       | `/tmp/galaxy-game-state`     | `/var/lib/galaxy-dev/game-state` |
| Engine image     | `galaxy-engine:local-dev`    | `galaxy-engine:dev`         |

## Prerequisites

The host must already provide:

- Docker daemon reachable as the user running `make` (member of the
  `docker` group, no sudo).
- An external bridge network named `edge` (or whatever
  `GALAXY_EDGE_NETWORK` overrides to):

  ```sh
  docker network create edge
  ```

- A host Caddy listening on `:80`/`:443`, attached to the `edge`
  network, and proxying `www.galaxy.lan` and `api.galaxy.lan` to
  `galaxy-caddy:80`. Example fragment for the host Caddyfile:

  ```caddy
  www.galaxy.lan, api.galaxy.lan {
      tls internal
      reverse_proxy galaxy-caddy:80
  }
  ```

- Game-state directory writable by the user running `make`. Default
  is `${HOME}/.galaxy-dev/game-state`; `make up` creates it on demand.
  Override by exporting `GALAXY_DEV_GAME_STATE_DIR` (e.g. to
  `/var/lib/galaxy-dev/game-state` once the host is provisioned for
  it).

## Bring it up

```sh
make -C tools/dev-deploy up
```

`up` (re)builds the local-dev backend and gateway images, makes sure the
engine image `galaxy-engine:dev` exists, and waits for healthchecks. It
does **not** seed the UI volume — that is normally done by CI. The first
time you run by hand:

```sh
make -C tools/dev-deploy seed-ui
make -C tools/dev-deploy up
make -C tools/dev-deploy health
```

`seed-ui` runs `pnpm build` in `ui/frontend/`, then copies the resulting
`build/` tree into the `galaxy-dev-ui-dist` volume. Subsequent CI deploys
overwrite this volume automatically.

## Daily flow

```sh
make -C tools/dev-deploy rebuild   # rebuild backend/gateway images + up
make -C tools/dev-deploy logs      # tail compose logs
make -C tools/dev-deploy health    # probe https://*.galaxy.lan
make -C tools/dev-deploy down      # stop, keep state
```

State persists in named volumes between `up`/`down` cycles. The
`development` branch keeps the dev environment continuously usable —
games created last week survive into this week unless somebody
calls `make clean-data`.

## Logging in

The same dev-mode email-code override as `tools/local-dev/` applies:

1. Enter `dev@galaxy.lan` (or whatever `BACKEND_DEV_SANDBOX_EMAIL`
   resolves to) in the login form.
2. Submit `123456` as the code if `BACKEND_AUTH_DEV_FIXED_CODE` is
   non-empty. Otherwise open Mailpit at
   `http://galaxy-mailpit:8025/` from inside the network or proxy it
   through the host Caddy when needed.

The fixed-code override is rejected by production env loaders, so it
cannot leak into the prod environment.

## Networking

```
Browser
   │  https://www.galaxy.lan, https://api.galaxy.lan
   ▼
host-Caddy (:80, :443, TLS, attached to `edge` network)
   │  reverse_proxy *.galaxy.lan → galaxy-caddy:80
   ▼
galaxy-caddy  (networks: edge + galaxy-dev-internal)
   │  www.galaxy.lan → file_server /srv/galaxy-ui (volume galaxy-dev-ui-dist)
   │  api.galaxy.lan → reverse_proxy galaxy-api:8080
   ▼
galaxy-dev-internal
   ├─ galaxy-api      (gateway:   :8080 REST, :9090 gRPC)
   ├─ galaxy-backend  (backend:   :8080 HTTP, :8081 gRPC push)
   ├─ galaxy-postgres (postgres:  :5432)
   ├─ galaxy-redis    (redis:     :6379)
   ├─ galaxy-mailpit  (mailpit:   :8025 UI, :1025 SMTP)
   └─ engine containers (spawned by backend on demand)
```

The compose project deliberately exposes no host ports. Diagnostics
that used to go through `localhost:8025` etc. now go through the
container network: `docker compose -f tools/dev-deploy/docker-compose.yml
exec galaxy-mailpit wget -qO- localhost:8025/messages` and similar.

## Persistent state and schema changes

The dev Postgres volume `galaxy-dev-postgres-data` survives redeploys.
Until the pre-production migration rule is lifted, every
backward-incompatible change to `backend/internal/postgres/migrations/00001_init.sql`
needs a manual wipe before the next deploy succeeds:

```sh
make -C tools/dev-deploy clean-data
make -C tools/dev-deploy up
```

This is the same caveat as `tools/local-dev/`, just with a different
volume name.

## Make targets

```text
make up             Build images, ensure engine image, bring stack up (waits for health)
make rebuild        Rebuild backend / gateway images (ignores cache), then up
make seed-ui        pnpm build + load build/ into galaxy-dev-ui-dist volume
make build-engine   Build galaxy-engine:dev (no-op if image already present)
make down           Stop containers, keep named volumes
make logs           Tail compose logs
make status         docker compose ps
make health         curl https://www.galaxy.lan + https://api.galaxy.lan/healthz
make psql           psql as galaxy@galaxy_backend
make clean-data     Stop everything and wipe volumes + game-state dir
```

## Files

- `docker-compose.yml` — six services: postgres, redis, mailpit,
  galaxy-backend, galaxy-api, galaxy-caddy. Reuses the alpine-runtime
  Dockerfiles from `../local-dev/` so the backend healthcheck can run
  `wget`. Reuses the dev keypair from `../local-dev/keys/`.
- `Caddyfile.dev` — the application-routing Caddy config, mounted into
  `galaxy-caddy` at `/etc/caddy/Caddyfile`.
- `Caddyfile.prod` — placeholder for a future prod deployment; not used
  by this compose.
- `Makefile` — wrapper over `docker compose` with helpers for engine,
  UI seeding, health probes, and full wipe.
- `.env.example` — non-secret defaults for the compose `${VAR:-}`
  expansions. Copy to `.env` if you want host-local overrides.

## Relationship to other infrastructure

- `tools/local-dev/` — single-developer playground, host-port mapped,
  Vite dev server on the side. Recommended for active UI work.
- `tools/local-ci/` — Gitea + act runner for **fallback** workflow
  testing without `gitea.lan`. Optional, not part of the per-stage CI
  gate anymore.
- `.gitea/workflows/dev-deploy.yaml` — the CI side of this stack:
  builds images, seeds the UI volume, runs `docker compose up -d` on
  every merge into `development`. The Makefile in this directory is
  what that workflow ultimately calls into.