# Multi-stage Dockerfile for Diesel Depot.
# Designed for Coolify (which runs any standard Dockerfile on a Node host).
# Build context: the project root.
#
# Build:  docker build -t diesel-depot .
# Run:    docker run --rm -p 4002:3000 -e NEXT_PUBLIC_POCKETBASE_URL=... diesel-depot
#
# In Coolify, point the service at this Dockerfile. Coolify will set PORT
# (default 3000) automatically and inject any env vars you add in the UI.

# ─── Stage 1: install deps in a clean layer ─────────────────────────────────
FROM node:20-alpine AS deps
RUN apk add --no-cache libc6-compat
WORKDIR /app
COPY package.json package-lock.json ./
# `npm ci` is reproducible (uses lockfile); falls back to `npm install` if no lockfile.
RUN npm ci --no-audit --no-fund || npm install --no-audit --no-fund

# ─── Stage 2: build the Next.js app ────────────────────────────────────────
FROM node:20-alpine AS builder
WORKDIR /app
ENV NEXT_TELEMETRY_DISABLED=1
COPY --from=deps /app/node_modules ./node_modules
COPY . .
# Build with the standalone output (set by next.config.mjs when NEXT_EXPORT is not "true").
RUN npm run build

# ─── Stage 3: minimal runtime image ─────────────────────────────────────────
FROM node:20-alpine AS runner
WORKDIR /app

ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1
# Coolify / Docker injects $PORT. Default to 3000 for local docker run.
ENV PORT=3000
ENV HOSTNAME=0.0.0.0

# Run as the unprivileged `node` user (built into the node:alpine image).
RUN addgroup --system --gid 1001 nodejs && \
    adduser  --system --uid 1001 --ingroup nodejs nextjs

# Copy the standalone output. Standalone already includes only the runtime
# node_modules it needs, so this is the only thing we have to copy.
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
# The .next/static and public folders are not part of standalone — copy them
# over so the static assets and PWA manifest/icons work.
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
COPY --from=builder --chown=nextjs:nodejs /app/public ./public

USER nextjs
EXPOSE 3000

# Coolify sends SIGTERM on stop; `node server.js` forwards it cleanly.
CMD ["node", "server.js"]