# syntax=docker/dockerfile:1

FROM node:22-alpine AS deps
WORKDIR /app
RUN corepack enable && corepack prepare pnpm@10.33.2 --activate
COPY package.json pnpm-lock.yaml ./
RUN --mount=type=cache,id=plimi-pnpm-store,target=/root/.local/share/pnpm/store,sharing=locked \
  pnpm install --frozen-lockfile

FROM node:22-alpine AS build
WORKDIR /app
RUN corepack enable && corepack prepare pnpm@10.33.2 --activate
COPY --from=deps /app/node_modules ./node_modules
COPY . .
# The IMG.LY model bundle is generated into public/imgly by prebuild. Keeping
# that directory in a BuildKit cache avoids downloading ~300 MB after every
# source-only redeploy, while Vite still copies the assets into dist/imgly.
RUN --mount=type=cache,id=plimi-imgly-assets,target=/app/public/imgly,sharing=locked \
  pnpm build && mv /app/dist/imgly /app/imgly-dist

FROM nginx:1.27-alpine AS runtime
COPY nginx.conf /etc/nginx/conf.d/default.conf
COPY docker/40-generate-runtime-config.sh /docker-entrypoint.d/40-generate-runtime-config.sh
# Keep the large, versioned model files in a stable layer. App-only changes can
# then reuse this layer instead of exporting the full model bundle each time.
COPY --from=build /app/imgly-dist /usr/share/nginx/html/imgly
COPY --from=build /app/dist /usr/share/nginx/html
RUN chmod +x /docker-entrypoint.d/40-generate-runtime-config.sh
EXPOSE 80
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD wget -qO- http://127.0.0.1/ >/dev/null || exit 1
CMD ["nginx", "-g", "daemon off;"]
