FROM node:22-alpine AS base

FROM base AS builder

# the lezer-promql build script is a bash script; alpine only ships ash
RUN apk add --no-cache bash
RUN corepack enable
WORKDIR /app

# the vite client build exceeds node's default ~2GB heap
ENV NODE_OPTIONS="--max-old-space-size=4096"

COPY . .

# install runs `prepare` (lezer-promql build + nuxt prepare); the node-server
# preset produces a self-contained SSR server in .output that reads
# NUXT_PUBLIC_* / NUXT_* runtime config from env at startup.
RUN pnpm install --frozen-lockfile && \
    NITRO_PRESET=node-server pnpm run build:web

FROM base AS runner
WORKDIR /app

RUN addgroup --system --gid 1001 nodejs
RUN adduser --system --uid 1001 nuxt

COPY --from=builder --chown=nuxt:nodejs /app/.output /app/.output

ENV NODE_ENV=production
USER nuxt
EXPOSE 3000

CMD ["node", "/app/.output/server/index.mjs"]