# syntax=docker/dockerfile:1

# ---- deps: install dependencies (cached separately from source changes) ----
FROM node:22-alpine AS deps
WORKDIR /app
COPY package.json package-lock.json ./
RUN npm ci

# ---- builder: compile the Next.js app ----
FROM node:22-alpine AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .

# Public env vars are inlined into the client bundle at build time, so they
# must be available here, not just at runtime. Values are passed in via
# --build-arg (see DEPLOYMENT.md).
ARG NEXT_PUBLIC_SUPABASE_URL
ARG NEXT_PUBLIC_SUPABASE_ANON_KEY
ENV NEXT_PUBLIC_SUPABASE_URL=$NEXT_PUBLIC_SUPABASE_URL
ENV NEXT_PUBLIC_SUPABASE_ANON_KEY=$NEXT_PUBLIC_SUPABASE_ANON_KEY
ENV NEXT_TELEMETRY_DISABLED=1

RUN npm run build

# ---- runner: minimal production image ----
FROM node:22-alpine AS runner
WORKDIR /app
ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1
ENV PORT=3000
ENV HOSTNAME=0.0.0.0

RUN addgroup --system --gid 1001 nodejs && adduser --system --uid 1001 nextjs

# output: "standalone" (next.config.ts) traces only the deps actually used at
# runtime, so this image doesn't carry the full node_modules tree.
COPY --from=builder /app/public ./public
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static

USER nextjs
EXPOSE 3000

HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
  CMD wget -qO- http://127.0.0.1:3000/login >/dev/null || exit 1

CMD ["node", "server.js"]