# syntax=docker/dockerfile:1

# Single stage: the Vite/SolidJS app is built at *container start* rather than at
# image build, so VITE_* env vars passed to `docker run` are inlined into the bundle.
FROM node:24-alpine
WORKDIR /app

# pnpm ships with Node via corepack; pin to the version that produced pnpm-lock.yaml.
RUN corepack enable && corepack prepare pnpm@10.33.0 --activate

# `serve` (what `npx serve` runs) — installed now so the image is self-contained.
RUN npm install -g serve@14

# Install deps first so this layer is cached unless the manifest/lockfile change.
# devDependencies are kept because the build runs at container start.
COPY package.json pnpm-lock.yaml ./
RUN pnpm install --frozen-lockfile

# App source. The build itself is deferred to the CMD below.
COPY . .

EXPOSE 3000

# Build (`tsc && vite build` → /app/dist) at runtime so VITE_* vars from the
# environment configure the app, then serve the static output.
CMD pnpm build && serve -s dist -l 3000