RecipesCam/docker

RecipesCam web — self-contained stack

A Docker-hosted web build of RecipesCam. Everything it needs is in this folder: move it to another machine, run two commands, and the app is up. It does not need the React Native project around it.

cp .env.example .env
docker compose up -d --build
# → http://localhost:8090

What runs where

Service	Image	Role
frontend	nginx:1.27-alpine (built by frontend/Dockerfile)	Static SPA + /api/ reverse proxy
api	node:22-slim (built by backend/Dockerfile)	Accounts + saved recipes, SQLite on ./data

frontend resolves api through Docker's embedded DNS and proxies /api/* to it — that is why the API container is named api and why it is not published on the host. Only ${WEB_PORT:-8090} is exposed.

Photos never leave the browser. The CanvasKit render pipeline (grade, frame, watermarks, JPEG encode) runs in the visitor's tab; the API only stores recipes as JSON.

Layout

docker-compose.yml      the stack
.env.example            WEB_PORT
data/                   SQLite (created on first run, gitignored)
backend/                Fastify + better-sqlite3 API, own Dockerfile
frontend/               Vite + React + CanvasKit SPA, own Dockerfile + nginx.conf
  shared/               vendored copies of the app's types + utils (see below)
  src/engine/           skiaShim.ts (CanvasKit) + exportEngine.ts (render pipeline)
                        + session.ts (localStorage/IndexedDB studio persistence)

Vendored files

frontend/shared/{types/index.ts,utils/*.ts} are byte-identical copies of src/types/index.ts and ten src/utils/*.ts files from the React Native project (@shopify/react-native-skia is aliased to src/engine/skiaShim.ts in vite.config.ts + tsconfig.json, so those files compile unchanged):

cinemaShader colorUtils defaultRecipes exifWrite frameUtils jpegDpi paramDefs recipeShare skiaImage toneShader.

The landing page needs no CDN: frontend/public/assets/fonts/*.woff2 are the seven self-hosted faces behind the three font groups the Themes menu offers (Plus Jakarta Sans / Inter / JetBrains Mono, Fraunces / Be Vietnam Pro / Courier Prime, Be Vietnam Pro / Space Mono — all SIL OFL, pulled from Google Fonts, vietnamese + latin + latin-ext subsets), and frontend/public/assets/samples/s*.jpg are the six placeholder negatives the film strip, preset tester and QR card show (swap them for real graded stills whenever we have them). Its one foreign request is the QR image from api.qrserver.com, which degrades to an empty slot offline.

When the app changes one of them, copy it back in — the renderer is only "parity" for as long as these stay in sync:

cd <repo>/docker/frontend/shared/utils
cp <repo>/src/utils/<name>.ts .

Operations

docker compose logs -f api        # API log
docker compose restart api        # after backend/src changes (rebuild: --build)
docker compose down               # stop; ./data survives

Backup is the ./data folder — that is the whole database.

Checks

curl -s http://localhost:8090/api/health          # {"ok":true}
curl -sI http://localhost:8090/                   # 200, index.html

Then open the UI, drop a photo in, and confirm the preview shows the picture and EXPORT downloads a JPEG that opens. The preview going solid black while the export still reports a plausible size is the one failure mode worth knowing: it means the CanvasKit GPU surfaces lost their shared GrDirectContext (see frontend/src/engine/skiaShim.ts), and with no GPU the raster fallback renders the same pipeline correctly, just slower.