# --------------- 构建阶段 ---------------
FROM node:22-alpine AS builder
ARG PNPM_STORE_PATH=/root/.local/share/pnpm/store
ENV BETTER_AUTH_SECRET=any-random-string-123456

RUN corepack enable && corepack install -g pnpm@10.26.2
RUN pnpm config set store-dir ${PNPM_STORE_PATH}

WORKDIR /app

COPY frontend/ .
RUN pnpm install --frozen-lockfile

RUN pnpm build

# --------------- 运行阶段（最小镜像） ---------------
FROM node:22-alpine AS runner
ENV NODE_ENV=production

WORKDIR /app
COPY --from=builder /app/next.config.js ./
COPY --from=builder /app/.next ./.next
COPY --from=builder /app/node_modules ./node_modules
COPY --from=builder /app/package.json ./

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