# ============ 构建阶段 ============
FROM node:20-alpine AS builder

WORKDIR /app

# 先复制 package.json，利用 Docker 缓存加速依赖安装
COPY package.json package-lock.json* ./
RUN npm ci --registry=https://registry.npmmirror.com

# 复制源码并构建
COPY . .
RUN npm run build

# ============ 运行阶段 ============
FROM nginx:1.27-alpine

COPY nginx/default.conf.template /etc/nginx/default.conf.template
COPY nginx/start.sh /etc/nginx/start.sh

# 从构建阶段复制 dist
COPY --from=builder /app/dist /usr/share/nginx/html

EXPOSE 80

RUN rm -f /etc/nginx/conf.d/default.conf && chmod +x /etc/nginx/start.sh

ENTRYPOINT ["/etc/nginx/start.sh"]