# --- Build stage: install deps and compile the SvelteKit app ---
FROM node:22-alpine AS build
WORKDIR /app

# Install dependencies first (better layer caching)
COPY package.json package-lock.json* ./
RUN npm ci

# Build the app
COPY . .
RUN npm run build

# Drop dev dependencies so the runtime image stays small
RUN npm prune --omit=dev

# --- Runtime stage: just Node + the built server ---
FROM node:22-alpine AS runtime
WORKDIR /app
ENV NODE_ENV=production

COPY --from=build /app/build ./build
COPY --from=build /app/node_modules ./node_modules
COPY --from=build /app/package.json ./package.json

EXPOSE 3000
CMD ["node", "build"]