dockerfile

# ----- Deps -----
FROM node:20-alpine AS deps
WORKDIR /app

# ffmpeg-static/ffprobe-static이 glibc 호환 필요
RUN apk add --no-cache libc6-compat

# pnpm 활성화
RUN corepack enable && corepack prepare pnpm@9.0.0 --activate

# 의존성 설치 (루트에 package.json, pnpm-lock.yaml 있어야 함)
COPY package.json pnpm-lock.yaml ./
# mono-repo가 아니라면 아래로 충분
RUN pnpm install --frozen-lockfile

# ----- Build -----
FROM node:20-alpine AS builder
WORKDIR /app
RUN apk add --no-cache libc6-compat
RUN corepack enable && corepack prepare pnpm@9.0.0 --activate

# deps 단계에서 받아온 node_modules 복사
COPY --from=deps /app/node_modules ./node_modules
# 소스 복사
COPY . .

# Next 빌드
RUN pnpm build

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

# 실행에 필요한 산출물/파일만 복사
COPY --from=builder /app/.next ./.next
COPY --from=builder /app/public ./public
COPY --from=builder /app/package.json ./package.json
COPY --from=builder /app/eslint.config.mjs ./eslint.config.mjs
COPY --from=builder /app/node_modules ./node_modules

EXPOSE 3000
# next start (package.json의 scripts.start가 next start면 CMD ["pnpm","start"]도 OK)
CMD ["node","node_modules/next/dist/bin/next","start","-p","3000"]