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scrabble-game/renderer/Dockerfile
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feat(export): server-rendered artifacts behind one signed download URL (#160)
The finished-game export (GCG + a new PNG of the final position) is one
signed, short-lived relative URL (game.export_url; HMAC-SHA256, 10-min
TTL, BACKEND_EXPORT_SIGN_KEY) resolved against the client's own origin
and delivered by the best affordance each platform has (five on-device
review rounds):

- TG Android/desktop: native showPopup chooser -> native downloadFile
  dialog (bridge-only chain, activation-safe).
- TG iOS: app-modal chooser -> OS share sheet with the fetched file
  (a popup callback cannot supply the activation the sheet needs).
- VK iOS: VKWebAppDownloadFile for both formats.
- VK Android: the PNG opens in VK's native image viewer, the GCG copies
  to the clipboard (the VK Android downloader hangs on any download,
  Content-Length/Range notwithstanding).
- VK desktop iframe / desktop browsers: plain anchor downloads.
- Mobile browsers: the OS share sheet (fetch-then-share).
- Legacy TG (< Bot API 8.0): app modal + GCG clipboard, no image option.

The PNG is rasterized on demand by the new internal `renderer` sidecar
(node:22-slim + skia-canvas + baked Liberation/Noto Color Emoji fonts)
executing the SAME ui/src/lib/gameimage.ts the ui project unit-tests;
the backend rebuilds the render payload from the journal +
engine.AlphabetTable, and the device date locale, IANA time zone and
localized non-play labels ride the signed URL. Nothing is stored — the
artifact re-derives from the immutable journal on each GET. The gateway
forwards /dl/* (caddy @gateway matcher extended) behind the per-IP
public rate limiter and serves bytes via http.ServeContent.

Deploy: renderer service in compose + prod overlay + rolling order +
prod push list; TEST_/PROD_EXPORT_SIGN_KEY secrets; the sidecar smoke
runs in the ui CI job. Docs: ARCHITECTURE, FUNCTIONAL(+_ru), UI_DESIGN,
TESTING, deploy/README, renderer/README.
2026-07-02 21:58:07 +00:00

30 lines
1.2 KiB
Docker

# renderer — the finished-game image-render sidecar: Node + skia-canvas running the SAME
# ui/src/lib/gameimage.ts the web client unit-tests, bundled at build time (renderer/README.md).
# Debian slim, not the repo's usual alpine/distroless: skia-canvas ships prebuilt glibc
# binaries and resolves fonts through fontconfig, and the runtime fonts are baked into the
# image — Liberation Sans (the UI font stack's Linux face) + Noto Color Emoji (the 🏆).
FROM node:22-slim AS build
WORKDIR /src/renderer
RUN corepack enable && corepack prepare pnpm@11.0.9 --activate
COPY renderer/package.json renderer/pnpm-lock.yaml renderer/pnpm-workspace.yaml ./
RUN pnpm install --frozen-lockfile
COPY renderer/build.mjs ./
COPY renderer/src ./src
COPY ui/src/lib /src/ui/src/lib
RUN pnpm run bundle
FROM node:22-slim
RUN apt-get update \
&& apt-get install -y --no-install-recommends fonts-liberation fonts-noto-color-emoji \
&& rm -rf /var/lib/apt/lists/*
ENV NODE_ENV=production
ARG VERSION=dev
ENV APP_VERSION=${VERSION}
WORKDIR /app
COPY --from=build /src/renderer/node_modules ./node_modules
COPY --from=build /src/renderer/dist ./dist
COPY renderer/src/server.mjs renderer/src/render.mjs ./src/
USER node
EXPOSE 8090
CMD ["node", "src/server.mjs"]