Dockerfile

# Docker configuration for Next.js deployment
FROM node:18-alpine AS base

WORKDIR /app

FROM base AS deps
RUN apk add --no-cache python3 make g++ git
COPY package.json yarn.lock* package-lock.json* ./
RUN yarn install --frozen-lockfile

FROM base AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .

RUN yarn build

FROM base AS runner
WORKDIR /app
ENV NODE_ENV production

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

COPY --from=builder /app/public ./public
COPY --from=builder /app/.next ./.next
COPY --from=builder /app/node_modules ./node_modules
COPY --from=builder /app/package.json ./package.json

USER nextjs

EXPOSE 3000
ENV PORT 3000

CMD ["yarn", "start"]