# 使用 Node.js 18 作为基础镜像
FROM node:18-alpine AS base

# 安装依赖阶段
FROM base AS deps
# 检查 https://github.com/nodejs/docker-node/tree/b4117f9333da4138b03a546ec926ef50a31506c3#nodealpine 了解为什么需要 libc6-compat
RUN apk add --no-cache libc6-compat
WORKDIR /app

# 安装依赖
COPY package.json bun.lock* package-lock.json* pnpm-lock.yaml* ./
RUN \
  if [ -f bun.lockb ]; then bun install --frozen-lockfile; \
  elif [ -f package-lock.json ]; then npm ci; \
  elif [ -f pnpm-lock.yaml ]; then corepack enable pnpm && pnpm i --frozen-lockfile; \
  else echo "Lockfile not found." && exit 1; \
  fi

# 构建阶段
FROM base AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .

# 构建应用
RUN npm run build

# 生产阶段
FROM base AS runner
WORKDIR /app

ENV NODE_ENV production
# 在 Linux 上，需要明确设置用户
RUN addgroup --system --gid 1001 nodejs
RUN adduser --system --uid 1001 svelte

# 复制构建产物
COPY --from=builder --chown=svelte:nodejs /app/build ./build
COPY --from=builder --chown=svelte:nodejs /app/node_modules ./node_modules
COPY --from=builder --chown=svelte:nodejs /app/package.json ./package.json

USER svelte

EXPOSE 3000

ENV PORT 3000
ENV HOSTNAME "0.0.0.0"

# 启动应用
CMD ["node", "build"]