Dockerfile

FROM node:20-alpine AS deps
RUN apk add --no-cache libc6-compat
WORKDIR /app

COPY package*.json ./

RUN npm ci && \
    npm cache clean --force

FROM node:20-alpine AS builder
WORKDIR /app

COPY --from=deps /app/node_modules ./node_modules
COPY . .

ENV NEXT_TELEMETRY_DISABLED=1
ENV NODE_ENV=production
ENV SKIP_ENV_VALIDATION=true
ENV MONGODB_URI="mongodb://localhost:27017/build-dummy"
ENV NEXTAUTH_SECRET="build-time-secret-will-be-replaced-at-runtime"
ENV NEXTAUTH_URL="http://localhost:3000"
ENV INNGEST_DEV="false"
ENV INNGEST_SIGNING_KEY=""
ENV INNGEST_EVENT_KEY=""

RUN npm run build

FROM node:20-alpine AS runner
WORKDIR /app

ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1

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

COPY --from=builder /app/public ./public
COPY --from=builder /app/package*.json ./
COPY --from=builder /app/.next/standalone ./
COPY --from=builder /app/.next/static ./.next/static

RUN npm ci --only=production && \
    npm cache clean --force

USER nextjs

EXPOSE 3000

ENV PORT=3000
ENV HOSTNAME="0.0.0.0"

HEALTHCHECK --interval=30s --timeout=3s --start-period=40s --retries=3 \
    CMD node -e "require('http').get('http://localhost:3000/api/health', (r) => {process.exit(r.statusCode === 200 ? 0 : 1)})" || exit 1

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