Dockerfile

# ---------- Base ----------
FROM node:20-alpine AS base
WORKDIR /app
RUN apk add --no-cache libc6-compat
ENV NODE_ENV=production

# ---------- Dependencies ----------
FROM base AS deps
COPY package*.json ./
RUN npm ci

# ---------- Build ----------
FROM base AS builder
COPY --from=deps /app/node_modules ./node_modules
COPY . .
RUN npm run build

# ---------- Production Runner ----------
FROM node:20-alpine AS runner
WORKDIR /app

ENV NODE_ENV=production

# Only copy what is needed at runtime
COPY --from=builder /app/.next ./.next
COPY --from=builder /app/public ./public
COPY --from=builder /app/node_modules ./node_modules
COPY --from=builder /app/package.json ./package.json
COPY --from=builder /app/next.config.js ./next.config.js
COPY --from=builder /app/ ./

EXPOSE 3000
CMD ["npm", "start"]